diff --git a/scripts/configuration.js b/scripts/configuration.js
index 45d9166..ca8b25a 100644
--- a/scripts/configuration.js
+++ b/scripts/configuration.js
@@ -191,7 +191,7 @@
         // Note: scriptRoot is no longer used - scripts are loaded from kefinTweaksRoot + '/scripts/'
 
             // Save defaults to JS Injector for future use
-            await saveConfigToJavaScriptInjector(defaultConfig);
+            await KefinTweaksUtils.saveConfigToJavaScriptInjector(defaultConfig);
             
             return defaultConfig;
         } catch (error) {
@@ -2278,7 +2278,7 @@
                     config.enabled = isEnabled;
                     
                     // Save the updated config to the injector
-                    await saveConfigToJavaScriptInjector(config);
+                    await KefinTweaksUtils.saveConfigToJavaScriptInjector(config);
                     
                     window.KefinTweaksConfigEnabled = isEnabled;
                     console.log('[KefinTweaks Configuration] KefinTweaks', isEnabled ? 'enabled' : 'disabled');
@@ -4684,7 +4684,7 @@
     // Apply imported configuration
     async function applyImportedConfig(importedConfig, modalInstance) {
         // Save to JavaScript Injector
-        await saveConfigToJavaScriptInjector(importedConfig);
+        await KefinTweaksUtils.saveConfigToJavaScriptInjector(importedConfig);
         
         // Reload the modal with new config
         modalInstance.close();
@@ -4707,20 +4707,7 @@
                 throw new Error('ApiClient not available');
             }
 
-            const server = ApiClient._serverAddress;
-            const token = ApiClient.accessToken();
-
-            const response = await fetch(`${server}/Plugins`, {
-                headers: {
-                    'X-Emby-Token': token
-                }
-            });
-
-            if (!response.ok) {
-                throw new Error(`HTTP ${response.status}: ${response.statusText}`);
-            }
-
-            const plugins = await response.json();
+            const plugins = await apiHelper.getPlugins();
             console.log('[KefinTweaks Configuration] Active Plugins:', plugins);
 
             // Handle both array and object with Items property
@@ -4752,10 +4739,22 @@
 
             const server = ApiClient._serverAddress;
             const token = ApiClient.accessToken();
+            const client = typeof ApiClient.applicationName === 'function' ? ApiClient.applicationName() : 'Jellyfin Web';
+            const device = typeof ApiClient.deviceName === 'function' ? ApiClient.deviceName() : (navigator.userAgent.includes('Chrome') ? 'Chrome' : 'Browser');
+            const deviceId = typeof ApiClient.deviceId === 'function' ? ApiClient.deviceId() : '';
+            const version = ApiClient._appVersion || ApiClient._serverVersion || '';
+            const parts = [
+                `Client="${encodeURIComponent(client)}"`,
+                `Device="${encodeURIComponent(device)}"`,
+                `DeviceId="${encodeURIComponent(deviceId)}"`,
+                `Version="${encodeURIComponent(version)}"`,
+                `Token="${encodeURIComponent(token)}"`
+            ];
+            const auth = `MediaBrowser ${parts.join(', ')}`;
 
             const response = await fetch(`${server}/Plugins/${pluginId}/Configuration`, {
                 headers: {
-                    'X-Emby-Token': token
+                    'Authorization': auth
                 }
             });
 
@@ -4772,73 +4771,6 @@
         }
     }
 
-    // Save configuration to JavaScript Injector plugin
-    async function saveConfigToJavaScriptInjector(config) {
-        try {
-            // Find the plugin
-            const pluginId = await findJavaScriptInjectorPlugin();
-
-            // Get fresh configuration data
-            const injectorConfig = await getJavaScriptInjectorConfig(pluginId);
-                
-            // Ensure CustomJavaScripts array exists
-            if (!injectorConfig.CustomJavaScripts) {
-                injectorConfig.CustomJavaScripts = [];
-            }
-
-            // Create the script content
-            const scriptContent = `// KefinTweaks Configuration
-// This file is automatically generated by KefinTweaks Configuration UI
-// Do not edit manually unless you know what you're doing
-
-window.KefinTweaksConfig = ${JSON.stringify(config, null, 2)};`;
-
-            // Check if KefinTweaks-Config already exists
-            const existingScriptIndex = injectorConfig.CustomJavaScripts.findIndex(
-                script => script.Name === 'KefinTweaks-Config'
-            );
-
-            if (existingScriptIndex !== -1) {
-                // Update existing script
-                console.log('[KefinTweaks Configuration] Updating existing KefinTweaks-Config script');
-                injectorConfig.CustomJavaScripts[existingScriptIndex].Script = scriptContent;
-                // Keep existing Enabled and RequiresAuthentication settings
-            } else {
-                // Add new script
-                console.log('[KefinTweaks Configuration] Adding new KefinTweaks-Config script');
-                injectorConfig.CustomJavaScripts.push({
-                    Name: 'KefinTweaks-Config',
-                    Script: scriptContent,
-                    Enabled: true,
-                    RequiresAuthentication: false
-                });
-            }
-
-            // POST the updated configuration back
-            const server = ApiClient._serverAddress;
-            const token = ApiClient.accessToken();
-
-            const response = await fetch(`${server}/Plugins/${pluginId}/Configuration`, {
-                method: 'POST',
-                headers: {
-                    'X-Emby-Token': token,
-                    'Content-Type': 'application/json'
-                },
-                body: JSON.stringify(injectorConfig)
-            });
-
-            if (!response.ok) {
-                throw new Error(`HTTP ${response.status}: ${response.statusText}`);
-            }
-
-            console.log('[KefinTweaks Configuration] Configuration saved successfully');
-            return true;
-        } catch (error) {
-            console.error('[KefinTweaks Configuration] Error saving configuration:', error);
-            throw error;
-        }
-    }
-
     function getSectionConfigFromUI(rootElement, prefix, sectionIndex) {
         const scope = rootElement || document;
         const sectionItem = scope.querySelector(`.${prefix}_section_item[data-section-index="${sectionIndex}"]`);
@@ -5404,7 +5336,7 @@ window.KefinTweaksConfig = ${JSON.stringify(config, null, 2)};`;
 
         // Save to JavaScript Injector plugin
         try {
-            await saveConfigToJavaScriptInjector(config);
+            await KefinTweaksUtils.saveConfigToJavaScriptInjector(config);
             
             // Update global config objects so dropdown changes reflect saved values
             window.KefinTweaksConfig = config;
@@ -5448,7 +5380,7 @@ window.KefinTweaksConfig = ${JSON.stringify(config, null, 2)};`;
             defaultConfig.kefinTweaksRoot = existingConfig.kefinTweaksRoot;
             // Note: scriptRoot is no longer used - scripts are loaded from kefinTweaksRoot + '/scripts/'
 
-            await saveConfigToJavaScriptInjector(defaultConfig);
+            await KefinTweaksUtils.saveConfigToJavaScriptInjector(defaultConfig);
 
             if (window.KefinTweaksToaster && window.KefinTweaksToaster.toast) {
                 window.KefinTweaksToaster.toast('Configuration reset to defaults.');
@@ -5488,7 +5420,7 @@ window.KefinTweaksConfig = ${JSON.stringify(config, null, 2)};`;
             // This will trigger the reset logic in injector.js for all clients
             config.configVersion = Date.now();
 
-            await saveConfigToJavaScriptInjector(config);
+            await KefinTweaksUtils.saveConfigToJavaScriptInjector(config);
 
             if (window.KefinTweaksToaster && window.KefinTweaksToaster.toast) {
                 window.KefinTweaksToaster.toast('Reset signal sent. All users will be reset on next load.');