diff --git a/projects/IoTDameon/IoTDameon.csproj b/projects/IoTDameon/IoTDameon.csproj
index fa49d1cd..4bc8bf03 100644
--- a/projects/IoTDameon/IoTDameon.csproj
+++ b/projects/IoTDameon/IoTDameon.csproj
@@ -16,6 +16,6 @@
 	</ItemGroup>
 
 	<ItemGroup>
-	  <Folder Include="wwwroot\upload\" />
+		<Folder Include="wwwroot\upload\" />
 	</ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/projects/IoTDameon/ShellHelper.cs b/projects/IoTDameon/ShellHelper.cs
index ed3e1fb5..15c9d3b5 100644
--- a/projects/IoTDameon/ShellHelper.cs
+++ b/projects/IoTDameon/ShellHelper.cs
@@ -1,4 +1,5 @@
-using System.Diagnostics;
+using System;
+using System.Diagnostics;
 using System.Runtime.InteropServices;
 
 namespace IoTDameon
@@ -7,24 +8,26 @@ namespace IoTDameon
     {
         public static string Bash(this string cmd)
         {
+            var fileName = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "powershell" : "/bin/bash";
             var escapedArgs = cmd.Replace("\"", "\\\"");
 
             var process = new Process()
             {
                 StartInfo = new ProcessStartInfo
                 {
-                    FileName = RuntimeInformation.IsOSPlatform(OSPlatform.Windows)?"powershell": "/bin/bash",
+                    FileName = fileName,
                     Arguments = $"-c \"{escapedArgs}\"",
                     RedirectStandardOutput = true,
                     UseShellExecute = false,
                     CreateNoWindow = true,
                 }
             };
-
+            Console.WriteLine($"# {fileName} {escapedArgs}");
             process.Start();
             string result = process.StandardOutput.ReadToEnd();
             process.WaitForExit();
-
+            process.Refresh();
+            process.Close();
             return result;
         }
     }
diff --git a/projects/IoTDameon/UpdateIoTNodeService.cs b/projects/IoTDameon/UpdateIoTNodeService.cs
index cb5c6326..f3513da7 100644
--- a/projects/IoTDameon/UpdateIoTNodeService.cs
+++ b/projects/IoTDameon/UpdateIoTNodeService.cs
@@ -4,7 +4,6 @@ using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using System;
-using System.Diagnostics;
 using System.IO;
 using System.IO.Compression;
 using System.Net;
@@ -108,8 +107,10 @@ namespace IoTDameon
                 if (!File.Exists(file))
                 {
                     var bytes = this._httpClientFactory.CreateClient().GetAsync($"{server}/{name}").Result.Content.ReadAsByteArrayAsync().Result;
-                    using var fs = File.Create(file);
-                    fs.Write(bytes);
+                    using (var fs = File.Create(file))
+                    {
+                        fs.Write(bytes);
+                    }
                     currentCheckSum = getCheckSum(file);
                     if (currentCheckSum != lastCheckSum)
                     {
@@ -144,6 +145,10 @@ namespace IoTDameon
                     //备份要更新的程序
                     try
                     {
+                        if (Directory.Exists(backupPath))
+                        {
+                            Directory.Delete(backupPath, true);
+                        }
                         Directory.Move(appPath, backupPath);
                         this._logger.LogInformation($"back up {appPath}");
                     }
@@ -154,9 +159,12 @@ namespace IoTDameon
                     }
                     Directory.CreateDirectory(appPath);
                     this._logger.LogInformation($"mkdir {appPath}");
-                    foreach (var item in Directory.GetFiles(backupPath,"*.db"))
+                    foreach (var item in Directory.GetFiles(backupPath))
                     {
-                        File.Copy(item, Path.Combine(appPath, Path.GetFileName(item)));
+                        if (item.EndsWith(".db") || item == "appsettings.json")
+                        {
+                            File.Copy(item, Path.Combine(appPath, Path.GetFileName(item)));
+                        }
                     }
                     this._logger.LogInformation($"copy db files to {appPath}");
                     //更新程序
@@ -176,8 +184,7 @@ namespace IoTDameon
                     if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
                     {
                         var updateScript = Path.Combine(appPath, "update.sh");
-                        var command = $"-c \"chmod 755 {updateScript}\"";
-                        Console.WriteLine(command);
+                        var command = $"chmod 755 {updateScript}";
                         Console.WriteLine(command.Bash());
                         Console.WriteLine(updateScript.Bash());
                         this._logger.LogInformation($"chmod and run {updateScript}");
@@ -191,10 +198,14 @@ namespace IoTDameon
 
         private string getCheckSum(string file)
         {
-            using var sha = SHA512.Create();
-            using var fs = File.OpenRead(file);
-            var checksum = BitConverter.ToString(sha.ComputeHash(fs)).Replace("-", "").ToLower();
-            return checksum;
+            using (var sha = SHA512.Create())
+            {
+                using (var fs = File.OpenRead(file))
+                {
+                    var checksum = BitConverter.ToString(sha.ComputeHash(fs)).Replace("-", "").ToLower();
+                    return checksum;
+                }
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/projects/IoTNode/Version.cs b/projects/IoTNode/Version.cs
index 60619bd9..401215f8 100644
--- a/projects/IoTNode/Version.cs
+++ b/projects/IoTNode/Version.cs
@@ -1,4 +1,4 @@
 using System.Reflection;
 
 [assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyInformationalVersion("1.0.0.20082702")]
\ No newline at end of file
+[assembly: AssemblyInformationalVersion("1.0.0.20082703")]
\ No newline at end of file
diff --git a/projects/IoTNode/update.sh b/projects/IoTNode/update.sh
index 5e8e2ccc..6713eb85 100644
--- a/projects/IoTNode/update.sh
+++ b/projects/IoTNode/update.sh
@@ -1,2 +1,2 @@
-chmod 755 ~/publish/apps/IoTNode/IoTNode
-chmod 755 ~/publish/apps/IoTNode/wwwroot/ffmpeg-linux-arm64
\ No newline at end of file
+chmod 755 /root/publish/apps/IoTNode/IoTNode
+chmod 755 /root/publish/apps/IoTNode/wwwroot/ffmpeg-linux-arm64
\ No newline at end of file