diff --git a/py/routes/update_routes.py b/py/routes/update_routes.py
index 3b45c0f1..0d126cb5 100644
--- a/py/routes/update_routes.py
+++ b/py/routes/update_routes.py
@@ -1,11 +1,13 @@
 import os
+import subprocess
 import aiohttp
 import logging
 import toml
-import subprocess
+import git
 from datetime import datetime
 from aiohttp import web
-from typing import Dict, Any, List
+from typing import Dict, List
+
 
 logger = logging.getLogger(__name__)
 
@@ -17,6 +19,7 @@ class UpdateRoutes:
         """Register update check routes"""
         app.router.add_get('/api/check-updates', UpdateRoutes.check_updates)
         app.router.add_get('/api/version-info', UpdateRoutes.get_version_info)
+        app.router.add_post('/api/perform-update', UpdateRoutes.perform_update)
     
     @staticmethod
     async def check_updates(request):
@@ -25,6 +28,8 @@ class UpdateRoutes:
         Returns update status and version information
         """
         try:
+            nightly = request.query.get('nightly', 'false').lower() == 'true'
+            
             # Read local version from pyproject.toml
             local_version = UpdateRoutes._get_local_version()
             
@@ -32,13 +37,21 @@ class UpdateRoutes:
             git_info = UpdateRoutes._get_git_info()
 
             # Fetch remote version from GitHub
-            remote_version, changelog = await UpdateRoutes._get_remote_version()
+            if nightly:
+                remote_version, changelog = await UpdateRoutes._get_nightly_version()
+            else:
+                remote_version, changelog = await UpdateRoutes._get_remote_version()
             
             # Compare versions
-            update_available = UpdateRoutes._compare_versions(
-                local_version.replace('v', ''), 
-                remote_version.replace('v', '')
-            )
+            if nightly:
+                # For nightly, compare commit hashes
+                update_available = UpdateRoutes._compare_nightly_versions(git_info, remote_version)
+            else:
+                # For stable, compare semantic versions
+                update_available = UpdateRoutes._compare_versions(
+                    local_version.replace('v', ''), 
+                    remote_version.replace('v', '')
+                )
             
             return web.json_response({
                 'success': True,
@@ -46,7 +59,8 @@ class UpdateRoutes:
                 'latest_version': remote_version,
                 'update_available': update_available,
                 'changelog': changelog,
-                'git_info': git_info
+                'git_info': git_info,
+                'nightly': nightly
             })
             
         except Exception as e:
@@ -55,7 +69,7 @@ class UpdateRoutes:
                 'success': False,
                 'error': str(e)
             })
-    
+        
     @staticmethod
     async def get_version_info(request):
         """
@@ -84,6 +98,168 @@ class UpdateRoutes:
                 'error': str(e)
             })
     
+    @staticmethod
+    async def perform_update(request):
+        """
+        Perform Git-based update to latest release tag or main branch
+        """
+        try:
+            # Parse request body
+            body = await request.json() if request.has_body else {}
+            nightly = body.get('nightly', False)
+            
+            # Get current plugin directory
+            current_dir = os.path.dirname(os.path.abspath(__file__))
+            plugin_root = os.path.dirname(os.path.dirname(current_dir))
+            
+            # Backup settings.json if it exists
+            settings_path = os.path.join(plugin_root, 'settings.json')
+            settings_backup = None
+            if os.path.exists(settings_path):
+                with open(settings_path, 'r', encoding='utf-8') as f:
+                    settings_backup = f.read()
+                logger.info("Backed up settings.json")
+            
+            # Perform Git update
+            success, new_version = await UpdateRoutes._perform_git_update(plugin_root, nightly)
+            
+            # Restore settings.json if we backed it up
+            if settings_backup and success:
+                with open(settings_path, 'w', encoding='utf-8') as f:
+                    f.write(settings_backup)
+                logger.info("Restored settings.json")
+            
+            if success:
+                return web.json_response({
+                    'success': True,
+                    'message': f'Successfully updated to {new_version}',
+                    'new_version': new_version
+                })
+            else:
+                return web.json_response({
+                    'success': False,
+                    'error': 'Failed to complete Git update'
+                })
+                
+        except Exception as e:
+            logger.error(f"Failed to perform update: {e}", exc_info=True)
+            return web.json_response({
+                'success': False,
+                'error': str(e)
+            })
+    
+    @staticmethod
+    async def _get_nightly_version() -> tuple[str, List[str]]:
+        """
+        Fetch latest commit from main branch
+        """
+        repo_owner = "willmiao"
+        repo_name = "ComfyUI-Lora-Manager"
+        
+        # Use GitHub API to fetch the latest commit from main branch
+        github_url = f"https://api.github.com/repos/{repo_owner}/{repo_name}/commits/main"
+        
+        try:
+            async with aiohttp.ClientSession() as session:
+                async with session.get(github_url, headers={'Accept': 'application/vnd.github+json'}) as response:
+                    if response.status != 200:
+                        logger.warning(f"Failed to fetch GitHub commit: {response.status}")
+                        return "main", []
+                    
+                    data = await response.json()
+                    commit_sha = data.get('sha', '')[:7]  # Short hash
+                    commit_message = data.get('commit', {}).get('message', '')
+                    
+                    # Format as "main-{short_hash}"
+                    version = f"main-{commit_sha}"
+                    
+                    # Use commit message as changelog
+                    changelog = [commit_message] if commit_message else []
+                    
+                    return version, changelog
+        
+        except Exception as e:
+            logger.error(f"Error fetching nightly version: {e}", exc_info=True)
+            return "main", []
+    
+    @staticmethod
+    def _compare_nightly_versions(local_git_info: Dict[str, str], remote_version: str) -> bool:
+        """
+        Compare local commit hash with remote main branch
+        """
+        try:
+            local_hash = local_git_info.get('short_hash', 'unknown')
+            if local_hash == 'unknown':
+                return True  # Assume update available if we can't get local hash
+            
+            # Extract remote hash from version string (format: "main-{hash}")
+            if '-' in remote_version:
+                remote_hash = remote_version.split('-')[-1]
+                return local_hash != remote_hash
+            
+            return True  # Default to update available
+            
+        except Exception as e:
+            logger.error(f"Error comparing nightly versions: {e}")
+            return False
+    
+    @staticmethod
+    async def _perform_git_update(plugin_root: str, nightly: bool = False) -> tuple[bool, str]:
+        """
+        Perform Git-based update using GitPython
+        
+        Args:
+            plugin_root: Path to the plugin root directory
+            nightly: Whether to update to main branch or latest release
+            
+        Returns:
+            tuple: (success, new_version)
+        """
+        try:
+            # Open the Git repository
+            repo = git.Repo(plugin_root)
+            
+            # Fetch latest changes
+            origin = repo.remotes.origin
+            origin.fetch()
+            
+            if nightly:
+                # Switch to main branch and pull latest
+                main_branch = 'main'
+                if main_branch not in [branch.name for branch in repo.branches]:
+                    # Create local main branch if it doesn't exist
+                    repo.create_head(main_branch, origin.refs.main)
+                
+                repo.heads[main_branch].checkout()
+                origin.pull(main_branch)
+                
+                # Get new commit hash
+                new_version = f"main-{repo.head.commit.hexsha[:7]}"
+                
+            else:
+                # Get latest release tag
+                tags = sorted(repo.tags, key=lambda t: t.commit.committed_datetime, reverse=True)
+                if not tags:
+                    logger.error("No tags found in repository")
+                    return False, ""
+                
+                latest_tag = tags[0]
+                
+                # Checkout to latest tag
+                repo.git.checkout(latest_tag.name)
+                
+                new_version = latest_tag.name
+            
+            logger.info(f"Successfully updated to {new_version}")
+            return True, new_version
+            
+        except git.exc.GitError as e:
+            logger.error(f"Git error during update: {e}")
+            return False, ""
+        except Exception as e:
+            logger.error(f"Error during Git update: {e}")
+            return False, ""
+    
     @staticmethod
     def _get_local_version() -> str:
         """Get local plugin version from pyproject.toml"""
diff --git a/pyproject.toml b/pyproject.toml
index 2af0a264..7be9dcfe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,8 @@ dependencies = [
     "requests",
     "toml",
     "natsort",
-    "msgpack"
+    "msgpack",
+    "GitPython"
 ]
 
 [project.urls]
diff --git a/requirements.txt b/requirements.txt
index db115810..a3423de0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@ numpy
 natsort
 msgpack
 pyyaml
+GitPython
diff --git a/static/css/base.css b/static/css/base.css
index 1f983dae..99aedbb7 100644
--- a/static/css/base.css
+++ b/static/css/base.css
@@ -50,8 +50,8 @@ html, body {
     --lora-border: oklch(90% 0.02 256 / 0.15);
     --lora-text: oklch(95% 0.02 256);
     --lora-error: oklch(75% 0.32 29);
-    --lora-warning: oklch(var(--lora-warning-l) var(--lora-warning-c) var(--lora-warning-h)); /* Modified to be used with oklch() */
-    --lora-success: oklch(var(--lora-success-l) var(--lora-success-c) var(--lora-success-h)); /* New green success color */
+    --lora-warning: oklch(var(--lora-warning-l) var(--lora-warning-c) var(--lora-warning-h));
+    --lora-success: oklch(var(--lora-success-l) var(--lora-success-c) var(--lora-success-h));
     
     /* Spacing Scale */
     --space-1: calc(8px * 1);
diff --git a/static/css/components/header.css b/static/css/components/header.css
index 13918428..0eb2237a 100644
--- a/static/css/components/header.css
+++ b/static/css/components/header.css
@@ -223,11 +223,6 @@
   opacity: 1;
 }
 
-.update-badge.hidden,
-.update-badge:not(.visible) {
-  opacity: 0;
-}
-
 /* Mobile adjustments */
 @media (max-width: 768px) {
   .app-title {
diff --git a/static/css/components/modal.css b/static/css/components/modal.css
index 500afa08..031ed917 100644
--- a/static/css/components/modal.css
+++ b/static/css/components/modal.css
@@ -172,6 +172,91 @@ body.modal-open {
     opacity: 1;
 }
 
+/* Update Modal specific styles */
+.update-actions {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-2);
+    align-items: stretch;
+    flex-wrap: nowrap;
+}
+
+.update-link {
+    color: var(--lora-accent);
+    text-decoration: none;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+    font-size: 0.95em;
+}
+
+.update-link:hover {
+    text-decoration: underline;
+}
+
+/* Update progress styles */
+.update-progress {
+    background: rgba(0, 0, 0, 0.03);
+    border: 1px solid var(--lora-border);
+    border-radius: var(--border-radius-sm);
+    padding: var(--space-2);
+    margin: var(--space-2) 0;
+}
+
+[data-theme="dark"] .update-progress {
+    background: rgba(255, 255, 255, 0.03);
+}
+
+.progress-info {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-1);
+}
+
+.progress-text {
+    font-size: 0.9em;
+    color: var(--text-color);
+    opacity: 0.8;
+}
+
+.progress-bar {
+    width: 100%;
+    height: 8px;
+    background-color: rgba(0, 0, 0, 0.1);
+    border-radius: 4px;
+    overflow: hidden;
+}
+
+[data-theme="dark"] .progress-bar {
+    background-color: rgba(255, 255, 255, 0.1);
+}
+
+.progress-fill {
+    height: 100%;
+    background-color: var(--lora-accent);
+    width: 0%;
+    transition: width 0.3s ease;
+    border-radius: 4px;
+}
+
+/* Update button states */
+#updateBtn {
+    min-width: 120px;
+}
+
+#updateBtn.updating {
+    background-color: var(--lora-warning);
+    cursor: not-allowed;
+}
+
+#updateBtn.success {
+    background-color: var(--lora-success);
+}
+
+#updateBtn.error {
+    background-color: var(--lora-error);
+}
+
 /* Settings styles */
 .settings-toggle {
     width: 36px;
diff --git a/static/js/managers/UpdateService.js b/static/js/managers/UpdateService.js
index 52a62603..dc95f98d 100644
--- a/static/js/managers/UpdateService.js
+++ b/static/js/managers/UpdateService.js
@@ -3,7 +3,7 @@ import { getStorageItem, setStorageItem } from '../utils/storageHelpers.js';
 
 export class UpdateService {
     constructor() {
-        this.updateCheckInterval = 24 * 60 * 60 * 1000; // 24 hours
+        this.updateCheckInterval = 60 * 60 * 1000; // 1 hour
         this.currentVersion = "v0.0.0";  // Initialize with default values
         this.latestVersion = "v0.0.0";   // Initialize with default values
         this.updateInfo = null;
@@ -13,8 +13,10 @@ export class UpdateService {
             branch: "unknown",
             commit_date: "unknown"
         };
-        this.updateNotificationsEnabled = getStorageItem('show_update_notifications');
+        this.updateNotificationsEnabled = getStorageItem('show_update_notifications', true);
         this.lastCheckTime = parseInt(getStorageItem('last_update_check') || '0');
+        this.isUpdating = false;
+        this.nightlyMode = getStorageItem('nightly_updates', false);
     }
 
     initialize() {
@@ -28,23 +30,44 @@ export class UpdateService {
                 this.updateBadgeVisibility();
             });
         }
+
+        const updateBtn = document.getElementById('updateBtn');
+        if (updateBtn) {
+            updateBtn.addEventListener('click', () => this.performUpdate());
+        }
+        
+        // Register event listener for nightly update toggle
+        const nightlyCheckbox = document.getElementById('nightlyUpdateToggle');
+        if (nightlyCheckbox) {
+            nightlyCheckbox.checked = this.nightlyMode;
+            nightlyCheckbox.addEventListener('change', (e) => {
+                this.nightlyMode = e.target.checked;
+                setStorageItem('nightly_updates', e.target.checked);
+                this.updateNightlyWarning();
+                this.updateModalContent();
+                // Re-check for updates when switching channels
+                this.manualCheckForUpdates();
+            });
+            this.updateNightlyWarning();
+        }
         
         // Perform update check if needed
         this.checkForUpdates().then(() => {
             // Ensure badges are updated after checking
             this.updateBadgeVisibility();
         });
-        
-        // Set up event listener for update button
-        // const updateToggle = document.getElementById('updateToggleBtn');
-        // if (updateToggle) {
-        //     updateToggle.addEventListener('click', () => this.toggleUpdateModal());
-        // }
 
         // Immediately update modal content with current values (even if from default)
         this.updateModalContent();
     }
     
+    updateNightlyWarning() {
+        const warning = document.getElementById('nightlyWarning');
+        if (warning) {
+            warning.style.display = this.nightlyMode ? 'flex' : 'none';
+        }
+    }
+    
     async checkForUpdates() {
         // Check if we should perform an update check
         const now = Date.now();
@@ -59,8 +82,8 @@ export class UpdateService {
         }
         
         try {
-            // Call backend API to check for updates
-            const response = await fetch('/api/check-updates');
+            // Call backend API to check for updates with nightly flag
+            const response = await fetch(`/api/check-updates?nightly=${this.nightlyMode}`);
             const data = await response.json();
             
             if (data.success) {
@@ -137,8 +160,8 @@ export class UpdateService {
         const shouldShow = this.updateNotificationsEnabled && this.updateAvailable;
         
         if (updateBadge) {
-            updateBadge.classList.toggle('hidden', !shouldShow);
-            console.log("Update badge visibility:", !shouldShow ? "hidden" : "visible");
+            updateBadge.classList.toggle('visible', shouldShow);
+            console.log("Update badge visibility:", shouldShow ? "visible" : "hidden");
         }
     }
     
@@ -157,7 +180,17 @@ export class UpdateService {
         const newVersionEl = modal.querySelector('.new-version .version-number');
         
         if (currentVersionEl) currentVersionEl.textContent = this.currentVersion;
-        if (newVersionEl) newVersionEl.textContent = this.latestVersion;
+        
+        if (newVersionEl) {
+            newVersionEl.textContent = this.latestVersion;
+        }
+        
+        // Update update button state
+        const updateBtn = modal.querySelector('#updateBtn');
+        if (updateBtn) {
+            updateBtn.classList.toggle('disabled', !this.updateAvailable || this.isUpdating);
+            updateBtn.disabled = !this.updateAvailable || this.isUpdating;
+        }
         
         // Update git info
         const gitInfoEl = modal.querySelector('.git-info');
@@ -218,6 +251,131 @@ export class UpdateService {
         }
     }
     
+    async performUpdate() {
+        if (!this.updateAvailable || this.isUpdating) {
+            return;
+        }
+        
+        try {
+            this.isUpdating = true;
+            this.updateUpdateUI('updating', 'Updating...');
+            this.showUpdateProgress(true);
+            
+            // Update progress
+            this.updateProgress(10, 'Preparing update...');
+            
+            const response = await fetch('/api/perform-update', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json'
+                },
+                body: JSON.stringify({
+                    nightly: this.nightlyMode
+                })
+            });
+            
+            this.updateProgress(50, 'Installing update...');
+            
+            const data = await response.json();
+            
+            if (data.success) {
+                this.updateProgress(100, 'Update completed successfully!');
+                this.updateUpdateUI('success', 'Updated!');
+                
+                // Show success message and suggest restart
+                setTimeout(() => {
+                    this.showUpdateCompleteMessage(data.new_version);
+                }, 1000);
+                
+            } else {
+                throw new Error(data.error || 'Update failed');
+            }
+            
+        } catch (error) {
+            console.error('Update failed:', error);
+            this.updateUpdateUI('error', 'Update Failed');
+            this.updateProgress(0, `Update failed: ${error.message}`);
+            
+            // Hide progress after error
+            setTimeout(() => {
+                this.showUpdateProgress(false);
+            }, 3000);
+        } finally {
+            this.isUpdating = false;
+        }
+    }
+    
+    updateUpdateUI(state, text) {
+        const updateBtn = document.getElementById('updateBtn');
+        const updateBtnText = document.getElementById('updateBtnText');
+        
+        if (updateBtn && updateBtnText) {
+            // Remove existing state classes
+            updateBtn.classList.remove('updating', 'success', 'error', 'disabled');
+            
+            // Add new state class
+            if (state !== 'normal') {
+                updateBtn.classList.add(state);
+            }
+            
+            // Update button text
+            updateBtnText.textContent = text;
+            
+            // Update disabled state
+            updateBtn.disabled = (state === 'updating' || state === 'disabled');
+        }
+    }
+    
+    showUpdateProgress(show) {
+        const progressContainer = document.getElementById('updateProgress');
+        if (progressContainer) {
+            progressContainer.style.display = show ? 'block' : 'none';
+        }
+    }
+    
+    updateProgress(percentage, text) {
+        const progressFill = document.getElementById('updateProgressFill');
+        const progressText = document.getElementById('updateProgressText');
+        
+        if (progressFill) {
+            progressFill.style.width = `${percentage}%`;
+        }
+        
+        if (progressText) {
+            progressText.textContent = text;
+        }
+    }
+    
+    showUpdateCompleteMessage(newVersion) {
+        const modal = document.getElementById('updateModal');
+        if (!modal) return;
+        
+        // Update the modal content to show completion
+        const progressText = document.getElementById('updateProgressText');
+        if (progressText) {
+            progressText.innerHTML = `
+                <div style="text-align: center; color: var(--lora-success);">
+                    <i class="fas fa-check-circle" style="margin-right: 8px;"></i>
+                    Successfully updated to ${newVersion}!
+                    <br><br>
+                    <small style="opacity: 0.8;">
+                        Please restart ComfyUI to complete the update process.
+                    </small>
+                </div>
+            `;
+        }
+        
+        // Update current version display
+        this.currentVersion = newVersion;
+        this.updateAvailable = false;
+        
+        // Refresh the modal content
+        setTimeout(() => {
+            this.updateModalContent();
+            this.showUpdateProgress(false);
+        }, 2000);
+    }
+    
     // Simple markdown parser for changelog items
     parseMarkdown(text) {
         if (!text) return '';
diff --git a/templates/components/header.html b/templates/components/header.html
index 00013003..2e7f7be3 100644
--- a/templates/components/header.html
+++ b/templates/components/header.html
@@ -53,7 +53,7 @@
         </div>
         <div class="update-toggle" id="updateToggleBtn" title="Check Updates">
           <i class="fas fa-bell"></i>
-          <span class="update-badge hidden"></span>
+          <span class="update-badge"></span>
         </div>
         <div class="support-toggle" id="supportToggleBtn" title="Support">
           <i class="fas fa-heart"></i>
diff --git a/templates/components/modals.html b/templates/components/modals.html
index 7caa12dd..7f152c90 100644
--- a/templates/components/modals.html
+++ b/templates/components/modals.html
@@ -476,9 +476,26 @@
                         <span class="version-number">v0.0.0</span>
                     </div>
                 </div>
-                <a href="https://github.com/willmiao/ComfyUI-Lora-Manager" target="_blank" class="update-link">
-                    <i class="fas fa-external-link-alt"></i> View on GitHub
-                </a>
+                
+                <div class="update-actions">
+                    <a href="https://github.com/willmiao/ComfyUI-Lora-Manager" target="_blank" class="update-link">
+                        <i class="fas fa-external-link-alt"></i> View on GitHub
+                    </a>
+                    <button id="updateBtn" class="primary-btn disabled">
+                        <i class="fas fa-download"></i>
+                        <span id="updateBtnText">Update Now</span>
+                    </button>
+                </div>
+            </div>
+            
+            <!-- Update Progress Section -->
+            <div class="update-progress" id="updateProgress" style="display: none;">
+                <div class="progress-info">
+                    <div class="progress-text" id="updateProgressText">Preparing update...</div>
+                    <div class="progress-bar">
+                        <div class="progress-fill" id="updateProgressFill"></div>
+                    </div>
+                </div>
             </div>
             
             <div class="changelog-section">