diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 4077495..a4ef339 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -28,8 +28,8 @@ jobs:
 
       - name: Validate syntax
         run: |
-          python -m py_compile app_version.py main.py build.py tests/test_auth_relogin_smoke.py
+          python -m py_compile app_version.py main.py build.py updater_gui.py tests/test_auth_relogin_smoke.py tests/test_auto_update_service.py tests/test_chat_actions.py tests/test_token_store.py
 
       - name: Run tests
         run: |
-          python -m unittest tests/test_auth_relogin_smoke.py
+          python -m unittest discover -s tests -p "test_*.py" -v
diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
index 45da9c3..12d587d 100644
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -70,8 +70,8 @@ jobs:
         if: env.CONTINUE == 'true'
         shell: powershell
         run: |
-          python -m py_compile app_version.py main.py build.py tests/test_auth_relogin_smoke.py
-          python -m unittest tests/test_auth_relogin_smoke.py
+          python -m py_compile app_version.py main.py build.py updater_gui.py tests/test_auth_relogin_smoke.py tests/test_auto_update_service.py tests/test_chat_actions.py tests/test_token_store.py
+          python -m unittest discover -s tests -p "test_*.py" -v
 
       - name: Build release zip
         if: env.CONTINUE == 'true'
diff --git a/build.py b/build.py
index 9ffe9df..b30ddb6 100644
--- a/build.py
+++ b/build.py
@@ -6,12 +6,14 @@ from app_version import APP_VERSION
 
 # --- Конфигурация ---
 APP_NAME = "AnabasisManager"
+UPDATER_NAME = "AnabasisUpdater"
 VERSION = APP_VERSION  # Единая версия приложения
 MAIN_SCRIPT = "main.py"
+UPDATER_SCRIPT = "updater_gui.py"
 ICON_PATH = "icon.ico"
 DIST_DIR = os.path.join("dist", APP_NAME)
 ARCHIVE_NAME = f"{APP_NAME}-{VERSION}"  # Формат Название-Версия
-SAFE_CLEAN_ROOT_FILES = {"main.py", "requirements.txt", "build.py"}
+SAFE_CLEAN_ROOT_FILES = {"main.py", "updater_gui.py", "requirements.txt", "build.py"}
 REMOVE_LIST = [
     "Qt6Pdf.dll", "Qt6PdfQuick.dll", "Qt6PdfWidgets.dll",
     "Qt6VirtualKeyboard.dll", "Qt6Positioning.dll",
@@ -58,6 +60,29 @@ def run_build():
         sys.exit(1)
 
 
+def run_updater_build():
+    print(f"\n--- 1.2 Сборка {UPDATER_NAME} ---")
+    command = [
+        "pyinstaller",
+        "--noconfirm",
+        "--onefile",
+        "--windowed",
+        f"--name={UPDATER_NAME}",
+        "--distpath", DIST_DIR,
+        "--workpath", os.path.join("build", "updater"),
+        "--specpath", os.path.join("build", "updater_spec"),
+        f"--icon={ICON_PATH}" if os.path.exists(ICON_PATH) else "",
+        UPDATER_SCRIPT,
+    ]
+    command = [arg for arg in command if arg]
+    try:
+        subprocess.check_call(command)
+        print(f"[OK] {UPDATER_NAME} собран.")
+    except subprocess.CalledProcessError as e:
+        print(f"[ERROR] Ошибка при сборке {UPDATER_NAME}: {e}")
+        sys.exit(1)
+
+
 def run_cleanup():
     print(f"\n--- 2. Оптимизация папки {APP_NAME} ---")
 
@@ -99,6 +124,7 @@ if __name__ == "__main__":
             shutil.rmtree(folder)
 
     run_build()
+    run_updater_build()
     run_cleanup()
     create_archive()
 
diff --git a/main.py b/main.py
index da50378..55dfc40 100644
--- a/main.py
+++ b/main.py
@@ -1,10 +1,22 @@
-import sys
 import json
-import time
-import shutil
-import auth_webview
 import os
+import shutil
+import sys
 import threading
+import time
+
+from PySide6.QtCore import QProcess
+from PySide6.QtCore import QStandardPaths
+from PySide6.QtCore import Qt, QUrl, QDateTime, QTimer
+from PySide6.QtGui import QIcon, QAction, QActionGroup, QDesktopServices
+from PySide6.QtWidgets import (QApplication, QMainWindow, QLabel, QLineEdit,
+                               QPushButton, QVBoxLayout, QWidget, QMessageBox,
+                               QTextBrowser, QScrollArea, QCheckBox, QHBoxLayout,
+                               QTabWidget, QDialog, QDialogButtonBox,
+                               QProgressBar)
+from vk_api.exceptions import VkApiError
+
+import auth_webview
 from app_version import APP_VERSION
 from services import (
     AutoUpdateService,
@@ -18,20 +30,14 @@ from services import (
 )
 from ui.dialogs import MultiLinkDialog as UIMultiLinkDialog
 from ui.main_window import instructions_text
-from PySide6.QtWidgets import (QApplication, QMainWindow, QLabel, QLineEdit,
-                               QPushButton, QVBoxLayout, QWidget, QMessageBox,
-                               QTextBrowser, QScrollArea, QCheckBox, QHBoxLayout,
-                               QSizePolicy, QTabWidget, QDialog, QDialogButtonBox,
-                               QProgressBar)
-from PySide6.QtCore import Qt, QUrl, QDateTime, QTimer
-from PySide6.QtGui import QIcon, QAction, QDesktopServices
-from vk_api.exceptions import VkApiError
-from PySide6.QtCore import QStandardPaths
-from PySide6.QtCore import QProcess
 
 # --- Управление токенами и настройками ---
-APP_DATA_DIR = os.path.join(QStandardPaths.writableLocation(QStandardPaths.AppDataLocation), "AnabasisVKChatManager")
+APP_DATA_DIR = os.path.join(
+    QStandardPaths.writableLocation(QStandardPaths.StandardLocation.AppDataLocation),
+    "AnabasisVKChatManager",
+)
 TOKEN_FILE = os.path.join(APP_DATA_DIR, "token.json")
+SETTINGS_FILE = os.path.join(APP_DATA_DIR, "settings.json")
 WEB_ENGINE_CACHE_DIR = os.path.join(APP_DATA_DIR, "web_engine_cache")
 CACHE_CLEANUP_MARKER = os.path.join(APP_DATA_DIR, "pending_cache_cleanup")
 LOG_FILE = os.path.join(APP_DATA_DIR, "app.log")
@@ -42,6 +48,7 @@ AUTH_RELOGIN_BACKOFF_SECONDS = 5.0
 UPDATE_REPOSITORY = ""
 # Full repository URL is preferred (supports GitHub/Gitea).
 UPDATE_REPOSITORY_URL = "https://git.daemonlord.ru/benya/AnabasisChatRemove"
+UPDATE_CHANNEL_DEFAULT = "stable"
 UPDATE_REQUEST_TIMEOUT = 8
 
 
@@ -79,6 +86,7 @@ class VkChatManager(QMainWindow):
         self._auth_relogin_in_progress = False
         self._last_auth_relogin_ts = 0.0
         self.update_repository_url = detect_update_repository_url(UPDATE_REPOSITORY_URL, UPDATE_REPOSITORY)
+        self.update_channel = UPDATE_CHANNEL_DEFAULT
         self.update_checker = None
         self.update_thread = None
         self._update_check_silent = False
@@ -90,6 +98,7 @@ class VkChatManager(QMainWindow):
 
         self._cleanup_cache_if_needed()
         self._ensure_log_dir()
+        self._load_settings()
         self.init_ui()
         self.load_saved_token_on_startup()
         self.setup_token_timer()
@@ -114,7 +123,7 @@ class VkChatManager(QMainWindow):
         layout.addWidget(self.token_input)
 
         self.token_timer_label = QLabel("Срок действия токена: Н/Д")
-        self.token_timer_label.setAlignment(Qt.AlignRight)
+        self.token_timer_label.setAlignment(Qt.AlignmentFlag.AlignRight)
         layout.addWidget(self.token_timer_label)
 
         self.auth_btn = QPushButton("Авторизоваться через VK")
@@ -176,7 +185,7 @@ class VkChatManager(QMainWindow):
         self.add_user_btn.clicked.connect(self.add_user_to_chat)
         layout.addWidget(self.add_user_btn)
         self.status_label = QLabel("Статус: не авторизован")
-        self.status_label.setAlignment(Qt.AlignCenter)
+        self.status_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
         layout.addWidget(self.status_label)
 
         layout.addStretch(1)
@@ -230,6 +239,26 @@ class VkChatManager(QMainWindow):
         tools_menu.addAction(check_updates_action)
         self.check_updates_action = check_updates_action
 
+        channel_menu = tools_menu.addMenu("Канал обновлений")
+        self.update_channel_group = QActionGroup(self)
+        self.update_channel_group.setExclusive(True)
+
+        stable_channel_action = QAction("Релизы (stable)", self)
+        stable_channel_action.setCheckable(True)
+        stable_channel_action.setChecked(self.update_channel == "stable")
+        stable_channel_action.triggered.connect(lambda checked: checked and self.set_update_channel("stable"))
+        channel_menu.addAction(stable_channel_action)
+        self.update_channel_group.addAction(stable_channel_action)
+        self.update_channel_stable_action = stable_channel_action
+
+        beta_channel_action = QAction("Бета (pre-release)", self)
+        beta_channel_action.setCheckable(True)
+        beta_channel_action.setChecked(self.update_channel == "beta")
+        beta_channel_action.triggered.connect(lambda checked: checked and self.set_update_channel("beta"))
+        channel_menu.addAction(beta_channel_action)
+        self.update_channel_group.addAction(beta_channel_action)
+        self.update_channel_beta_action = beta_channel_action
+
         logout_action = QAction("Выйти и очистить", self)
         logout_action.setStatusTip("Выйти, удалить токен и кэш")
         logout_action.triggered.connect(self.logout_and_clear)
@@ -259,12 +288,12 @@ class VkChatManager(QMainWindow):
             "Поддерживается проверка обновлений и автообновление Windows-сборки.<br><br>"
             f"Репозиторий: {repo_html}"
         )
-        content.setTextFormat(Qt.RichText)
-        content.setTextInteractionFlags(Qt.TextBrowserInteraction)
+        content.setTextFormat(Qt.TextFormat.RichText)
+        content.setTextInteractionFlags(Qt.TextInteractionFlag.TextBrowserInteraction)
         content.setOpenExternalLinks(True)
         content.setWordWrap(True)
 
-        button_box = QDialogButtonBox(QDialogButtonBox.Ok, parent=dialog)
+        button_box = QDialogButtonBox(QDialogButtonBox.StandardButton.Ok, parent=dialog)
         button_box.accepted.connect(dialog.accept)
 
         layout = QVBoxLayout(dialog)
@@ -281,8 +310,8 @@ class VkChatManager(QMainWindow):
 
         scroll_area = QScrollArea()
         scroll_area.setWidgetResizable(True)
-        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
-        scroll_area.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
+        scroll_area.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
+        scroll_area.setVerticalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAsNeeded)
 
         tab_layout.addWidget(scroll_area)
 
@@ -300,15 +329,60 @@ class VkChatManager(QMainWindow):
         if hasattr(self, "check_updates_action"):
             self.check_updates_action.setEnabled(not in_progress)
 
+    def _normalize_update_channel(self, value):
+        channel = (value or "").strip().lower()
+        if channel in ("beta", "betas", "pre", "prerelease", "pre-release"):
+            return "beta"
+        return "stable"
+
+    def _load_settings(self):
+        self.update_channel = UPDATE_CHANNEL_DEFAULT
+        if not os.path.exists(SETTINGS_FILE):
+            return
+        try:
+            with open(SETTINGS_FILE, "r", encoding="utf-8") as f:
+                settings = json.load(f)
+            self.update_channel = self._normalize_update_channel(settings.get("update_channel"))
+        except Exception as e:
+            self._log_event("settings_load", f"Ошибка загрузки настроек: {e}", level="WARN")
+
+    def _save_settings(self):
+        try:
+            os.makedirs(APP_DATA_DIR, exist_ok=True)
+            settings = {
+                "update_channel": self.update_channel,
+            }
+            with open(SETTINGS_FILE, "w", encoding="utf-8") as f:
+                json.dump(settings, f, ensure_ascii=False, indent=2)
+        except Exception as e:
+            self._log_event("settings_save", f"Ошибка сохранения настроек: {e}", level="WARN")
+
+    def set_update_channel(self, channel):
+        normalized = self._normalize_update_channel(channel)
+        if normalized == self.update_channel:
+            return
+        self.update_channel = normalized
+        self._save_settings()
+        self.status_label.setText(
+            f"Статус: канал обновлений переключен на {'бета' if normalized == 'beta' else 'релизы'}."
+        )
+        self._log_event("update_channel", f"update_channel={self.update_channel}")
+
     def check_for_updates(self, silent_no_updates=False):
         if self.update_thread and self.update_thread.is_alive():
             return
 
         self._update_check_silent = silent_no_updates
         self._set_update_action_state(True)
-        self.status_label.setText("Статус: проверка обновлений...")
+        channel_label = "бета" if self.update_channel == "beta" else "релизы"
+        self.status_label.setText(f"Статус: проверка обновлений ({channel_label})...")
 
-        self.update_checker = UpdateChecker(self.update_repository_url, APP_VERSION, request_timeout=UPDATE_REQUEST_TIMEOUT)
+        self.update_checker = UpdateChecker(
+            self.update_repository_url,
+            APP_VERSION,
+            request_timeout=UPDATE_REQUEST_TIMEOUT,
+            channel=self.update_channel,
+        )
         self.update_checker.check_finished.connect(self._on_update_check_finished)
         self.update_checker.check_failed.connect(self._on_update_check_failed)
         self.update_thread = threading.Thread(target=self.update_checker.run, daemon=True)
@@ -324,17 +398,17 @@ class VkChatManager(QMainWindow):
             self.status_label.setText(f"Статус: доступно обновление {latest_version}")
 
             message_box = QMessageBox(self)
-            message_box.setIcon(QMessageBox.Information)
+            message_box.setIcon(QMessageBox.Icon.Information)
             message_box.setWindowTitle("Доступно обновление")
             message_box.setText(
                 f"Текущая версия: {result.get('current_version')}\n"
                 f"Доступная версия: {latest_version}\n\n"
                 "Открыть страницу загрузки?"
             )
-            update_now_button = message_box.addButton("Обновить сейчас", QMessageBox.AcceptRole)
-            download_button = message_box.addButton("Скачать", QMessageBox.AcceptRole)
-            releases_button = message_box.addButton("Релизы", QMessageBox.ActionRole)
-            cancel_button = message_box.addButton("Позже", QMessageBox.RejectRole)
+            update_now_button = message_box.addButton("Обновить сейчас", QMessageBox.ButtonRole.AcceptRole)
+            download_button = message_box.addButton("Скачать", QMessageBox.ButtonRole.AcceptRole)
+            releases_button = message_box.addButton("Релизы", QMessageBox.ButtonRole.ActionRole)
+            cancel_button = message_box.addButton("Позже", QMessageBox.ButtonRole.RejectRole)
             message_box.setDefaultButton(update_now_button)
             message_box.exec()
 
@@ -356,9 +430,10 @@ class VkChatManager(QMainWindow):
                 self._log_event("update_check", "Диалог обновления закрыт без действия.", level="WARN")
             return
 
-        self.status_label.setText(f"Статус: используется актуальная версия ({APP_VERSION}).")
+        channel_label = "бета" if self.update_channel == "beta" else "релизы"
+        self.status_label.setText(f"Статус: используется актуальная версия ({APP_VERSION}, канал: {channel_label}).")
         if not self._update_check_silent:
-            QMessageBox.information(self, "Обновления", "Установлена актуальная версия.")
+            QMessageBox.information(self, "Обновления", f"Установлена актуальная версия в канале {channel_label}.")
 
     def _on_update_check_failed(self, error_text):
         self._set_update_action_state(False)
@@ -453,7 +528,7 @@ class VkChatManager(QMainWindow):
             self.status_label.setText(status_text)
         if busy:
             self._busy = True
-            QApplication.setOverrideCursor(Qt.WaitCursor)
+            QApplication.setOverrideCursor(Qt.CursorShape.WaitCursor)
             for widget in [
                 self.refresh_chats_btn, self.select_all_btn, self.deselect_all_btn,
                 self.vk_url_input, self.multi_link_btn, self.visible_messages_checkbox,
@@ -537,9 +612,9 @@ class VkChatManager(QMainWindow):
             self,
             "Подтверждение выхода",
             "Вы уверены, что хотите выйти и удалить сохраненный токен и кэш?",
-            QMessageBox.Yes | QMessageBox.No
+            QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No
         )
-        if confirm != QMessageBox.Yes:
+        if confirm != QMessageBox.StandardButton.Yes:
             return
 
         self._clear_auth_state(stop_timer=True, remove_token_file=True)
@@ -596,7 +671,7 @@ class VkChatManager(QMainWindow):
     def _on_auth_process_error(self, process_error):
         self._auth_process_error_text = f"Ошибка запуска авторизации: {process_error}"
         # For failed starts Qt may not emit finished(), so release UI here.
-        if self.auth_process and self.auth_process.state() == QProcess.NotRunning:
+        if self.auth_process and self.auth_process.state() == QProcess.ProcessState.NotRunning:
             output_path = self.auth_output_path
             self.auth_output_path = None
             self.auth_process = None
@@ -656,7 +731,7 @@ class VkChatManager(QMainWindow):
         self.handle_new_auth_token(token, expires_in)
 
     def start_auth(self, keep_status_text=False):
-        if self.auth_process and self.auth_process.state() != QProcess.NotRunning:
+        if self.auth_process and self.auth_process.state() != QProcess.ProcessState.NotRunning:
             self._log_event("auth_process", "Авторизация уже запущена, повторный запуск пропущен.")
             return
 
@@ -880,9 +955,9 @@ class VkChatManager(QMainWindow):
         confirm_dialog = QMessageBox(self)
         confirm_dialog.setWindowTitle("Подтверждение действия")
         confirm_dialog.setText(msg)
-        confirm_dialog.setIcon(QMessageBox.Question)
-        yes_button = confirm_dialog.addButton("Да", QMessageBox.YesRole)
-        no_button = confirm_dialog.addButton("Нет", QMessageBox.NoRole)
+        confirm_dialog.setIcon(QMessageBox.Icon.Question)
+        yes_button = confirm_dialog.addButton("Да", QMessageBox.ButtonRole.YesRole)
+        no_button = confirm_dialog.addButton("Нет", QMessageBox.ButtonRole.NoRole)
         confirm_dialog.setDefaultButton(no_button)  # "Нет" - кнопка по умолчанию
 
         confirm_dialog.exec()
@@ -955,9 +1030,9 @@ class VkChatManager(QMainWindow):
         confirm_dialog = QMessageBox(self)
         confirm_dialog.setWindowTitle("Подтверждение прав")
         confirm_dialog.setText(msg)
-        confirm_dialog.setIcon(QMessageBox.Question)
-        yes_button = confirm_dialog.addButton("Да", QMessageBox.YesRole)
-        no_button = confirm_dialog.addButton("Нет", QMessageBox.NoRole)
+        confirm_dialog.setIcon(QMessageBox.Icon.Question)
+        yes_button = confirm_dialog.addButton("Да", QMessageBox.ButtonRole.YesRole)
+        no_button = confirm_dialog.addButton("Нет", QMessageBox.ButtonRole.NoRole)
         confirm_dialog.setDefaultButton(no_button)
 
         confirm_dialog.exec()
@@ -1129,18 +1204,18 @@ class VkChatManager(QMainWindow):
                 download_name=download_name,
             )
             app_exe = sys.executable
-            script_path = AutoUpdateService.build_update_script(
-                app_dir=os.path.dirname(app_exe),
+            AutoUpdateService.launch_gui_updater(
+                app_exe=app_exe,
                 source_dir=source_dir,
-                exe_name=os.path.basename(app_exe),
+                work_dir=work_dir,
                 target_pid=os.getpid(),
+                version=latest_version,
             )
-            AutoUpdateService.launch_update_script(script_path, work_dir)
             self._log_event("auto_update", f"Update {latest_version} started from {download_url}")
             QMessageBox.information(
                 self,
                 "Обновление запущено",
-                "Обновление скачано. Приложение будет перезапущено.",
+                "Обновление скачано. Открылось окно обновления.",
             )
             QApplication.instance().quit()
             return True
diff --git a/services/auto_update_service.py b/services/auto_update_service.py
index d6c08eb..da73313 100644
--- a/services/auto_update_service.py
+++ b/services/auto_update_service.py
@@ -104,12 +104,26 @@ class AutoUpdateService:
             "if %ERRORLEVEL% EQU 0 (",
             "  set /a WAIT_LOOPS+=1",
             "  if %WAIT_LOOPS% GEQ 180 (",
-            "    echo Timeout waiting for process %TARGET_PID% to exit >> \"%UPDATE_LOG%\"",
-            "    goto :backup",
+            "    echo Timeout waiting for process %TARGET_PID%, attempting force stop >> \"%UPDATE_LOG%\"",
+            "    taskkill /PID %TARGET_PID% /T /F >nul 2>&1",
+            "    timeout /t 2 /nobreak >nul",
+            "    tasklist /FI \"PID eq %TARGET_PID%\" | find \"%TARGET_PID%\" >nul",
+            "    if %ERRORLEVEL% EQU 0 goto :pid_still_running",
+            "    goto :wait_image_unlock",
             "  )",
             "  timeout /t 1 /nobreak >nul",
             "  goto :wait_for_exit",
             ")",
+            ":wait_image_unlock",
+            "set /a IMG_LOOPS=0",
+            ":check_image",
+            "tasklist /FI \"IMAGENAME eq %EXE_NAME%\" | find /I \"%EXE_NAME%\" >nul",
+            "if %ERRORLEVEL% EQU 0 (",
+            "  set /a IMG_LOOPS+=1",
+            "  if %IMG_LOOPS% GEQ 60 goto :image_still_running",
+            "  timeout /t 1 /nobreak >nul",
+            "  goto :check_image",
+            ")",
             ":backup",
             "timeout /t 1 /nobreak >nul",
             "mkdir \"%BACKUP_DIR%\" >nul 2>&1",
@@ -134,6 +148,12 @@ class AutoUpdateService:
             ":backup_error",
             "echo Auto-update failed during backup. Code %RC% >> \"%UPDATE_LOG%\"",
             "exit /b %RC%",
+            ":pid_still_running",
+            "echo Auto-update aborted: process %TARGET_PID% is still running after force stop. >> \"%UPDATE_LOG%\"",
+            "exit /b 4",
+            ":image_still_running",
+            "echo Auto-update aborted: %EXE_NAME% still running and file lock may remain. >> \"%UPDATE_LOG%\"",
+            "exit /b 5",
         ]
         with open(script_path, "w", encoding="utf-8", newline="\r\n") as f:
             f.write("\r\n".join(script_lines) + "\r\n")
@@ -152,6 +172,40 @@ class AutoUpdateService:
             creationflags=creation_flags,
         )
 
+    @staticmethod
+    def launch_gui_updater(app_exe, source_dir, work_dir, target_pid, version=""):
+        app_dir = os.path.dirname(app_exe)
+        exe_name = os.path.basename(app_exe)
+        updater_exe = os.path.join(app_dir, "AnabasisUpdater.exe")
+        if not os.path.exists(updater_exe):
+            raise RuntimeError("Файл AnabasisUpdater.exe не найден в папке приложения.")
+
+        creation_flags = 0
+        if hasattr(subprocess, "CREATE_NEW_PROCESS_GROUP"):
+            creation_flags |= subprocess.CREATE_NEW_PROCESS_GROUP
+        if hasattr(subprocess, "DETACHED_PROCESS"):
+            creation_flags |= subprocess.DETACHED_PROCESS
+
+        subprocess.Popen(
+            [
+                updater_exe,
+                "--app-dir",
+                app_dir,
+                "--source-dir",
+                source_dir,
+                "--exe-name",
+                exe_name,
+                "--target-pid",
+                str(target_pid),
+                "--version",
+                str(version or ""),
+                "--work-dir",
+                str(work_dir or ""),
+            ],
+            cwd=work_dir,
+            creationflags=creation_flags,
+        )
+
     @classmethod
     def prepare_update(cls, download_url, checksum_url, download_name):
         work_dir = tempfile.mkdtemp(prefix="anabasis_update_")
diff --git a/services/update_service.py b/services/update_service.py
index bc81f67..d67703f 100644
--- a/services/update_service.py
+++ b/services/update_service.py
@@ -38,6 +38,75 @@ def _sanitize_repo_url(value):
     return f"{parsed.scheme}://{parsed.netloc}{clean_path}"
 
 
+def _normalize_update_channel(value):
+    channel = (value or "").strip().lower()
+    if channel in ("beta", "betas", "pre", "prerelease", "pre-release"):
+        return "beta"
+    return "stable"
+
+
+def _select_release_from_list(releases):
+    for item in releases:
+        if not isinstance(item, dict):
+            continue
+        if item.get("draft"):
+            continue
+        tag_name = (item.get("tag_name") or item.get("name") or "").strip()
+        if not tag_name:
+            continue
+        return item
+    return None
+
+
+def _extract_release_payload(release_data, repository_url, current_version):
+    parsed = urlparse(repository_url)
+    base_url = f"{parsed.scheme}://{parsed.netloc}"
+    repo_path = parsed.path.strip("/")
+    releases_url = f"{base_url}/{repo_path}/releases"
+
+    latest_tag = release_data.get("tag_name") or release_data.get("name") or ""
+    latest_version = latest_tag.lstrip("vV").strip()
+    html_url = release_data.get("html_url") or releases_url
+    assets = release_data.get("assets") or []
+    download_url = ""
+    download_name = ""
+    checksum_url = ""
+    for asset in assets:
+        url = asset.get("browser_download_url", "")
+        if url.lower().endswith(".zip"):
+            download_url = url
+            download_name = asset.get("name", "")
+            break
+    if not download_url and assets:
+        download_url = assets[0].get("browser_download_url", "")
+        download_name = assets[0].get("name", "")
+
+    for asset in assets:
+        name = asset.get("name", "").lower()
+        if not name:
+            continue
+        is_checksum_asset = name.endswith(".sha256") or name.endswith(".sha256.txt") or name in ("checksums.txt", "sha256sums.txt")
+        if not is_checksum_asset:
+            continue
+        if download_name and (download_name.lower() in name or name in (f"{download_name.lower()}.sha256", f"{download_name.lower()}.sha256.txt")):
+            checksum_url = asset.get("browser_download_url", "")
+            break
+        if not checksum_url:
+            checksum_url = asset.get("browser_download_url", "")
+
+    return {
+        "repository_url": repository_url,
+        "latest_version": latest_version,
+        "current_version": current_version,
+        "latest_tag": latest_tag,
+        "release_url": html_url,
+        "download_url": download_url,
+        "download_name": download_name,
+        "checksum_url": checksum_url,
+        "has_update": _is_newer_version(latest_version, current_version),
+    }
+
+
 def detect_update_repository_url(configured_url="", configured_repo=""):
     env_url = _sanitize_repo_url(os.getenv("ANABASIS_UPDATE_URL", ""))
     if env_url:
@@ -74,11 +143,12 @@ class UpdateChecker(QObject):
     check_finished = Signal(dict)
     check_failed = Signal(str)
 
-    def __init__(self, repository_url, current_version, request_timeout=8):
+    def __init__(self, repository_url, current_version, request_timeout=8, channel="stable"):
         super().__init__()
         self.repository_url = repository_url
         self.current_version = current_version
         self.request_timeout = request_timeout
+        self.channel = _normalize_update_channel(channel)
 
     def run(self):
         if not self.repository_url:
@@ -92,10 +162,17 @@ class UpdateChecker(QObject):
             self.check_failed.emit("Некорректный URL репозитория обновлений.")
             return
 
+        use_beta_channel = self.channel == "beta"
         if parsed.netloc.lower().endswith("github.com"):
-            api_url = f"https://api.github.com/repos/{repo_path}/releases/latest"
+            if use_beta_channel:
+                api_url = f"https://api.github.com/repos/{repo_path}/releases"
+            else:
+                api_url = f"https://api.github.com/repos/{repo_path}/releases/latest"
         else:
-            api_url = f"{base_url}/api/v1/repos/{repo_path}/releases/latest"
+            if use_beta_channel:
+                api_url = f"{base_url}/api/v1/repos/{repo_path}/releases"
+            else:
+                api_url = f"{base_url}/api/v1/repos/{repo_path}/releases/latest"
         releases_url = f"{base_url}/{repo_path}/releases"
         request = urllib.request.Request(
             api_url,
@@ -106,7 +183,7 @@ class UpdateChecker(QObject):
         )
         try:
             with urllib.request.urlopen(request, timeout=self.request_timeout) as response:
-                release_data = json.loads(response.read().decode("utf-8"))
+                response_data = json.loads(response.read().decode("utf-8"))
         except urllib.error.HTTPError as e:
             self.check_failed.emit(f"Ошибка HTTP при проверке обновлений: {e.code}")
             return
@@ -117,47 +194,20 @@ class UpdateChecker(QObject):
             self.check_failed.emit(f"Не удалось проверить обновления: {e}")
             return
 
-        latest_tag = release_data.get("tag_name") or release_data.get("name") or ""
-        latest_version = latest_tag.lstrip("vV").strip()
-        html_url = release_data.get("html_url") or releases_url
-        assets = release_data.get("assets") or []
-        download_url = ""
-        download_name = ""
-        checksum_url = ""
-        for asset in assets:
-            url = asset.get("browser_download_url", "")
-            if url.lower().endswith(".zip"):
-                download_url = url
-                download_name = asset.get("name", "")
-                break
-        if not download_url and assets:
-            download_url = assets[0].get("browser_download_url", "")
-            download_name = assets[0].get("name", "")
-
-        for asset in assets:
-            name = asset.get("name", "").lower()
-            if not name:
-                continue
-            is_checksum_asset = name.endswith(".sha256") or name.endswith(".sha256.txt") or name in ("checksums.txt", "sha256sums.txt")
-            if not is_checksum_asset:
-                continue
-            if download_name and (download_name.lower() in name or name in (f"{download_name.lower()}.sha256", f"{download_name.lower()}.sha256.txt")):
-                checksum_url = asset.get("browser_download_url", "")
-                break
-            if not checksum_url:
-                checksum_url = asset.get("browser_download_url", "")
-
-        self.check_finished.emit(
-            {
-                "repository_url": self.repository_url,
-                "latest_version": latest_version,
-                "current_version": self.current_version,
-                "latest_tag": latest_tag,
-                "release_url": html_url,
-                "download_url": download_url,
-                "download_name": download_name,
-                "checksum_url": checksum_url,
-                "has_update": _is_newer_version(latest_version, self.current_version),
-            }
-        )
+        release_data = response_data
+        if use_beta_channel:
+            if not isinstance(response_data, list):
+                self.check_failed.emit("Сервер вернул некорректный ответ списка релизов.")
+                return
+            release_data = _select_release_from_list(response_data)
+            if not release_data:
+                self.check_failed.emit("В канале beta не найдено доступных релизов.")
+                return
+        elif not isinstance(response_data, dict):
+            self.check_failed.emit("Сервер вернул некорректный ответ релиза.")
+            return
 
+        payload = _extract_release_payload(release_data, self.repository_url, self.current_version)
+        payload["release_channel"] = self.channel
+        payload["releases_url"] = releases_url
+        self.check_finished.emit(payload)
diff --git a/tests/test_auth_relogin_smoke.py b/tests/test_auth_relogin_smoke.py
index 9dc0888..f43ac66 100644
--- a/tests/test_auth_relogin_smoke.py
+++ b/tests/test_auth_relogin_smoke.py
@@ -19,7 +19,7 @@ class AuthReloginSmokeTests(unittest.TestCase):
         self.assertIn("process = QProcess(self)", self.main_source)
         self.assertIn("process.start(program, args)", self.main_source)
         self.assertIn("def _on_auth_process_finished(self, exit_code, _exit_status):", self.main_source)
-        self.assertIn("if self.auth_process and self.auth_process.state() == QProcess.NotRunning:", self.main_source)
+        self.assertIn("if self.auth_process and self.auth_process.state() == QProcess.ProcessState.NotRunning:", self.main_source)
 
     def test_force_relogin_has_backoff_and_event_log(self):
         self.assertIn("AUTH_RELOGIN_BACKOFF_SECONDS = 5.0", self.main_source)
@@ -53,7 +53,7 @@ class AuthReloginSmokeTests(unittest.TestCase):
         self.assertIn("class UpdateChecker(QObject):", self.update_source)
         self.assertIn("def _start_auto_update(self, download_url, latest_version, checksum_url=\"\", download_name=\"\"):", self.main_source)
         self.assertIn("AutoUpdateService.prepare_update", self.main_source)
-        self.assertIn("AutoUpdateService.build_update_script", self.main_source)
+        self.assertIn("AutoUpdateService.launch_gui_updater", self.main_source)
 
 
 if __name__ == "__main__":
diff --git a/tests/test_update_service.py b/tests/test_update_service.py
new file mode 100644
index 0000000..19ef71f
--- /dev/null
+++ b/tests/test_update_service.py
@@ -0,0 +1,51 @@
+import unittest
+import importlib.util
+from pathlib import Path
+
+MODULE_PATH = Path("services/update_service.py")
+SPEC = importlib.util.spec_from_file_location("update_service_under_test", MODULE_PATH)
+update_service = importlib.util.module_from_spec(SPEC)
+SPEC.loader.exec_module(update_service)
+
+
+class UpdateServiceTests(unittest.TestCase):
+    def test_normalize_update_channel(self):
+        self.assertEqual(update_service._normalize_update_channel("stable"), "stable")
+        self.assertEqual(update_service._normalize_update_channel("beta"), "beta")
+        self.assertEqual(update_service._normalize_update_channel("pre-release"), "beta")
+        self.assertEqual(update_service._normalize_update_channel("unknown"), "stable")
+        self.assertEqual(update_service._normalize_update_channel(""), "stable")
+
+    def test_select_release_from_list_skips_drafts(self):
+        releases = [
+            {"tag_name": "v2.0.0", "draft": True},
+            {"tag_name": "", "draft": False},
+            {"tag_name": "v1.9.0-beta.1", "draft": False},
+        ]
+        selected = update_service._select_release_from_list(releases)
+        self.assertIsNotNone(selected)
+        self.assertEqual(selected["tag_name"], "v1.9.0-beta.1")
+
+    def test_extract_release_payload_uses_zip_and_checksum(self):
+        release_data = {
+            "tag_name": "v1.7.2",
+            "html_url": "https://example.com/release/v1.7.2",
+            "assets": [
+                {"name": "notes.txt", "browser_download_url": "https://example.com/notes.txt"},
+                {"name": "AnabasisManager-win64.zip", "browser_download_url": "https://example.com/app.zip"},
+                {"name": "AnabasisManager-win64.zip.sha256", "browser_download_url": "https://example.com/app.zip.sha256"},
+            ],
+        }
+        payload = update_service._extract_release_payload(
+            release_data=release_data,
+            repository_url="https://git.daemonlord.ru/benya/AnabasisChatRemove",
+            current_version="1.7.1",
+        )
+        self.assertEqual(payload["latest_version"], "1.7.2")
+        self.assertEqual(payload["download_url"], "https://example.com/app.zip")
+        self.assertEqual(payload["checksum_url"], "https://example.com/app.zip.sha256")
+        self.assertTrue(payload["has_update"])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/updater_gui.py b/updater_gui.py
new file mode 100644
index 0000000..faa8582
--- /dev/null
+++ b/updater_gui.py
@@ -0,0 +1,218 @@
+import argparse
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import time
+
+from PySide6.QtCore import QObject, Qt, QThread, Signal, QTimer, QUrl
+from PySide6.QtGui import QDesktopServices
+from PySide6.QtWidgets import QApplication, QLabel, QProgressBar, QVBoxLayout, QWidget, QPushButton, QHBoxLayout
+
+
+def _write_log(log_path, message):
+    try:
+        os.makedirs(os.path.dirname(log_path), exist_ok=True)
+        with open(log_path, "a", encoding="utf-8") as f:
+            f.write(message.rstrip() + "\n")
+    except Exception:
+        pass
+
+
+def _is_pid_running(pid):
+    if pid <= 0:
+        return False
+    try:
+        completed = subprocess.run(
+            ["tasklist", "/FI", f"PID eq {pid}"],
+            capture_output=True,
+            text=True,
+            timeout=5,
+            check=False,
+        )
+        return str(pid) in (completed.stdout or "")
+    except Exception:
+        return False
+
+
+def _mirror_tree(src_dir, dst_dir, skip_names=None):
+    skip_set = {name.lower() for name in (skip_names or [])}
+    os.makedirs(dst_dir, exist_ok=True)
+    for root, dirs, files in os.walk(src_dir):
+        rel = os.path.relpath(root, src_dir)
+        target_root = dst_dir if rel == "." else os.path.join(dst_dir, rel)
+        os.makedirs(target_root, exist_ok=True)
+        for file_name in files:
+            if file_name.lower() in skip_set:
+                continue
+            source_file = os.path.join(root, file_name)
+            target_file = os.path.join(target_root, file_name)
+            os.makedirs(os.path.dirname(target_file), exist_ok=True)
+            shutil.copy2(source_file, target_file)
+
+
+class UpdateWorker(QObject):
+    status = Signal(int, str)
+    failed = Signal(str)
+    done = Signal()
+
+    def __init__(self, app_dir, source_dir, exe_name, target_pid, version, work_dir=""):
+        super().__init__()
+        self.app_dir = app_dir
+        self.source_dir = source_dir
+        self.exe_name = exe_name
+        self.target_pid = int(target_pid or 0)
+        self.version = version or ""
+        self.work_dir = work_dir or ""
+        self.log_path = os.path.join(app_dir, "update_error.log")
+
+    def run(self):
+        backup_dir = os.path.join(tempfile.gettempdir(), f"anabasis_backup_{int(time.time())}")
+        skip_names = {"anabasisupdater.exe"}
+        try:
+            self.status.emit(1, "Ожидание завершения приложения...")
+            wait_loops = 0
+            while _is_pid_running(self.target_pid):
+                time.sleep(1)
+                wait_loops += 1
+                if wait_loops >= 180:
+                    self.status.emit(1, "Принудительное завершение зависшего процесса...")
+                    subprocess.run(
+                        ["taskkill", "/PID", str(self.target_pid), "/T", "/F"],
+                        capture_output=True,
+                        text=True,
+                        timeout=10,
+                        check=False,
+                    )
+                    time.sleep(2)
+                    if _is_pid_running(self.target_pid):
+                        raise RuntimeError(f"Процесс {self.target_pid} не завершился.")
+                    break
+
+            self.status.emit(2, "Создание резервной копии...")
+            _mirror_tree(self.app_dir, backup_dir, skip_names=skip_names)
+
+            self.status.emit(3, "Применение обновления...")
+            _mirror_tree(self.source_dir, self.app_dir, skip_names=skip_names)
+
+            self.status.emit(4, "Запуск обновленного приложения...")
+            app_exe = os.path.join(self.app_dir, self.exe_name)
+            creation_flags = 0
+            if hasattr(subprocess, "DETACHED_PROCESS"):
+                creation_flags |= subprocess.DETACHED_PROCESS
+            if hasattr(subprocess, "CREATE_NEW_PROCESS_GROUP"):
+                creation_flags |= subprocess.CREATE_NEW_PROCESS_GROUP
+            subprocess.Popen([app_exe], cwd=self.app_dir, creationflags=creation_flags)
+
+            _write_log(self.log_path, f"Update success to version {self.version or 'unknown'}")
+            self.status.emit(5, "Очистка временных файлов...")
+            try:
+                shutil.rmtree(backup_dir, ignore_errors=True)
+                if self.work_dir and os.path.isdir(self.work_dir):
+                    shutil.rmtree(self.work_dir, ignore_errors=True)
+            except Exception:
+                pass
+            self.done.emit()
+        except Exception as exc:
+            _write_log(self.log_path, f"Update failed: {exc}")
+            try:
+                self.status.emit(4, "Восстановление из резервной копии...")
+                _mirror_tree(backup_dir, self.app_dir, skip_names=skip_names)
+            except Exception as rollback_exc:
+                _write_log(self.log_path, f"Rollback failed: {rollback_exc}")
+            self.failed.emit(str(exc))
+
+
+class UpdaterWindow(QWidget):
+    def __init__(self, app_dir, source_dir, exe_name, target_pid, version, work_dir=""):
+        super().__init__()
+        self.setWindowTitle("Anabasis Updater")
+        self.setMinimumWidth(480)
+        self.log_path = os.path.join(app_dir, "update_error.log")
+
+        self.label = QLabel("Подготовка обновления...")
+        self.label.setWordWrap(True)
+        self.progress = QProgressBar()
+        self.progress.setRange(0, 5)
+        self.progress.setValue(0)
+
+        self.open_log_btn = QPushButton("Открыть лог")
+        self.open_log_btn.setEnabled(False)
+        self.open_log_btn.clicked.connect(self.open_log)
+        self.close_btn = QPushButton("Закрыть")
+        self.close_btn.setEnabled(False)
+        self.close_btn.clicked.connect(self.close)
+
+        layout = QVBoxLayout(self)
+        layout.addWidget(self.label)
+        layout.addWidget(self.progress)
+        actions = QHBoxLayout()
+        actions.addStretch(1)
+        actions.addWidget(self.open_log_btn)
+        actions.addWidget(self.close_btn)
+        layout.addLayout(actions)
+
+        self.thread = QThread(self)
+        self.worker = UpdateWorker(app_dir, source_dir, exe_name, target_pid, version, work_dir=work_dir)
+        self.worker.moveToThread(self.thread)
+        self.thread.started.connect(self.worker.run)
+        self.worker.status.connect(self.on_status)
+        self.worker.failed.connect(self.on_failed)
+        self.worker.done.connect(self.on_done)
+        self.worker.done.connect(self.thread.quit)
+        self.worker.failed.connect(self.thread.quit)
+        self.thread.start()
+
+    def on_status(self, step, text):
+        self.label.setText(text)
+        self.progress.setValue(max(0, min(5, int(step))))
+
+    def on_done(self):
+        self.label.setText("Обновление успешно применено. Запускаю приложение...")
+        self.progress.setValue(5)
+        QTimer.singleShot(900, self.close)
+
+    def on_failed(self, error_text):
+        self.label.setText(
+            "Не удалось применить обновление.\n"
+            f"Причина: {error_text}\n"
+            "Подробности сохранены в update_error.log."
+        )
+        self.open_log_btn.setEnabled(True)
+        self.close_btn.setEnabled(True)
+
+    def open_log(self):
+        if os.path.exists(self.log_path):
+            QDesktopServices.openUrl(QUrl.fromLocalFile(self.log_path))
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--app-dir", required=True)
+    parser.add_argument("--source-dir", required=True)
+    parser.add_argument("--exe-name", required=True)
+    parser.add_argument("--target-pid", required=True)
+    parser.add_argument("--version", default="")
+    parser.add_argument("--work-dir", default="")
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+    app = QApplication(sys.argv)
+    app.setStyle("Fusion")
+    window = UpdaterWindow(
+        app_dir=args.app_dir,
+        source_dir=args.source_dir,
+        exe_name=args.exe_name,
+        target_pid=args.target_pid,
+        version=args.version,
+        work_dir=args.work_dir,
+    )
+    window.show()
+    return app.exec()
+
+
+if __name__ == "__main__":
+    sys.exit(main())