diff --git a/index.js b/index.js
index 78b4fda..717b888 100644
--- a/index.js
+++ b/index.js
@@ -13,6 +13,9 @@ const process = require('process');
 //const url = require('url');
 // const usb = require('usb') // Compiled with an old version of Node.js
 
+console.log(os.type());
+console.log(process.getSystemVersion());
+
 let home_directory = require('os').homedir();
 console.log('Home: '+home_directory);
 
@@ -20,27 +23,79 @@ let tmp_directory = require('os').tmpdir();
 console.log('Temporary: '+tmp_directory);
 
 // Set the config path for macOS or Linux
-let config_directory = null;
+let config_directory = 'OSIT/native_app';
+let config_filename = 'ae_native_app_config.json';
+let config_path = '';
+
 if (os.platform == 'darwin') {
+    let config_path_default = path.join(home_directory, config_directory, config_filename);
+    let config_path_backup = path.join(home_directory, 'Library/Application Support/OSIT', config_filename);
+    // let config_path_opt2 = path.join(home_directory, 'OSIT', config_filename);
+
+    if (fs.existsSync(config_path_default)) {
+        console.log('Default config file path exists: '+config_path_default);
+        config_path = config_path_default;
+    } else if (fs.existsSync(config_path_backup)) {
+        console.log('Backup config file path exists: '+config_path_backup);
+        config_path = config_path_backup;
+    } else {
+        console.log(`No config file found: ${config_path_default} or ${config_path_backup}`);
+        config_path = '';
+        // fs.mkdirSync(local_file_cache_path, true);
+        // console.log('Config directory path created: '+local_file_cache_path);
+    }
+
     // config_directory = path.join(home_directory, 'Library/Application Support/OSIT');
-    config_directory = path.join(home_directory, 'OSIT/native_app');
-    console.log('macOS config directory: '+config_directory);
+    // config_directory = path.join(home_directory, 'OSIT/native_app');
+    console.log(`macOS config directory: ${config_path}`);
 } else if (os.platform == 'linux') {
-    config_directory = path.join(home_directory, '.config/OSIT');
-    console.log('Linux config directory: '+config_directory);
+    let config_path_default = path.join(home_directory, config_directory, config_filename);
+    let config_path_backup = path.join(home_directory, '.config/OSIT', config_filename);
+    let config_path_temp = path.join(home_directory, 'tmp/OSIT', config_filename);
+
+    if (fs.existsSync(config_path_default)) {
+        console.log('Default config file path exists: '+config_path_default);
+        config_path = config_path_default;
+    } else if (fs.existsSync(config_path_backup)) {
+        console.log('Backup config file path exists: '+config_path_backup);
+        config_path = config_path_backup;
+    } else if (fs.existsSync(config_path_temp)) {
+        console.log('Temp config file path exists: '+config_path_temp);
+        config_path = config_path_temp;
+    } else {
+        console.log(`No config file found: ${config_path_default} or ${config_path_backup} or ${config_path_temp}`);
+        config_path = '';
+    }
+
+    // config_directory = path.join(home_directory, 'OSIT/native_app');
+    console.log(`Linux config directory: ${config_path}`);
 }
 
-// let config_path = path.join(config_directory, 'config.json');
-let config_path = path.join(config_directory, 'ae_native_app_config.json');
+// let config_path = path.join(config_directory, config_filename);
 
 let config = JSON.parse(fs.readFileSync(config_path));
 console.log('Config file read.', config);
+/*
+Minimal Contains:
+* conf_file_check_path = '~/OSIT/sync/admin_share/internal/ae_osit_app.default.conf'
+* conf_file_check_path_backup = 'ae_osit_app.conf'
+
+* api_pref_use = 'local' or 'remote' or 'backup'
+* api_base_url_local = https://local-api.oneskyit.com
+* api_base_url_remote = https://api.oneskyit.com
+* api_base_url_backup = https://bak-api.oneskyit.com
+
+* app_pref_use = 'local' or 'remote' or 'backup'
+* app_base_url_local = https://local-demo.oneskyit.com
+* app_base_url_remote = https://demo.oneskyit.com
+* app_base_url_backup = https://bak-demo.oneskyit.com
+
+* device_id = 'abcd1234'
+*/
 
 let local_file_cache_path = null;
 let host_file_temp_path = null;
 
-console.log(os.type());
-console.log(process.getSystemVersion());
 
 async function get_url_cfg() {
     let base_url = `${config.api_protocol}://${config.api_server}:${config.api_port}/${config.api_path}`;
@@ -267,7 +322,7 @@ ipcMain.handle('import_config', async (event, config_data) => {
 // Download file to path
 // full_save_path should be the full path that includes the filename
 // Updated 2023-05-14
-ipcMain.handle('download_file', async (event, api_base_url, api_endpoint, full_save_path, hash=null, verify_hash=false, overwrite_existing=false) => {
+ipcMain.handle('download_file', async (event, api_base_url, api_endpoint, full_save_path, hash=null, verify_hash=false, overwrite_existing=false, offset_minutes=3) => {
     console.log('*** Electron IPC Main: download_file() ***');
     // console.log('ipcMain on download_file: api_base_url='+api_base_url+' | api_temporary_token='+api_temporary_token);
     // console.log('ipcMain on download_file: api_base_url='+api_base_url);
@@ -302,7 +357,8 @@ ipcMain.handle('download_file', async (event, api_base_url, api_endpoint, full_s
         }
 
         let current_datetime = new Date();
-        let offset_minutes = 3; // In minutes. 5 minutes of no changes to the file content seems reasonable? Trying with 3 minutes 2022-10-12
+        // In minutes. 5 minutes of no changes to the file content seems reasonable? Trying with 3 minutes 2022-10-12
+        // offset_minutes = 3;
         let offset_datetime = new Date(current_datetime.getTime() - offset_minutes*60000);
 
         // console.log(`Times: ${current_datetime} ${offset_datetime} | File ${stats.mtime}`);
diff --git a/package-lock.json b/package-lock.json
index e0b1a6f..56e4b1d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -595,9 +595,9 @@
       }
     },
     "node_modules/electron": {
-      "version": "22.3.10",
-      "resolved": "https://registry.npmjs.org/electron/-/electron-22.3.10.tgz",
-      "integrity": "sha512-gh7PtSh+rfxHfM4dzPiEO+k1NRo07FvaK/jXG3HzuODrpTTEhC9rsE+AJGrTKQU6Nz7GorseMvnvs8PnUQPPTw==",
+      "version": "22.3.11",
+      "resolved": "https://registry.npmjs.org/electron/-/electron-22.3.11.tgz",
+      "integrity": "sha512-4PW1rJRUckJUCxTXRJkzJ7qlGTZ8Qfwoke5aFlaGccmn/zViuE9iSCg9zqIx00rzsbF9R5j8j9V4tAqyqjjJRA==",
       "dev": true,
       "hasInstallScript": true,
       "dependencies": {
@@ -2527,9 +2527,9 @@
       }
     },
     "electron": {
-      "version": "22.3.10",
-      "resolved": "https://registry.npmjs.org/electron/-/electron-22.3.10.tgz",
-      "integrity": "sha512-gh7PtSh+rfxHfM4dzPiEO+k1NRo07FvaK/jXG3HzuODrpTTEhC9rsE+AJGrTKQU6Nz7GorseMvnvs8PnUQPPTw==",
+      "version": "22.3.11",
+      "resolved": "https://registry.npmjs.org/electron/-/electron-22.3.11.tgz",
+      "integrity": "sha512-4PW1rJRUckJUCxTXRJkzJ7qlGTZ8Qfwoke5aFlaGccmn/zViuE9iSCg9zqIx00rzsbF9R5j8j9V4tAqyqjjJRA==",
       "dev": true,
       "requires": {
         "@electron/get": "^2.0.0",