diff --git a/.gitea/workflows/gui-version-release.yml b/.gitea/workflows/gui-version-release.yml
index 5d3fa01..48cfde1 100644
--- a/.gitea/workflows/gui-version-release.yml
+++ b/.gitea/workflows/gui-version-release.yml
@@ -158,30 +158,95 @@ jobs:
         Write-Host "Step 4.6: Install NSIS";
         Write-Host "==========================================";
         
-        # Download NSIS 3.09
-        $nsisUrl = "https://sourceforge.net/projects/nsis/files/NSIS%203/3.09/nsis-3.09-setup.exe/download";
-        $nsisInstaller = "$env:TEMP\nsis-setup.exe";
+        # Use current directory for installer to avoid permission issues
+        $nsisInstaller = "$PWD\nsis-setup.exe";
         
         Write-Host "Downloading NSIS installer...";
+        Write-Host "Target path: $nsisInstaller";
+        
+        # Try multiple sources
+        $downloaded = $false;
+        
+        # Source 1: Direct download from GitHub mirror
         try {
-          Invoke-WebRequest -Uri $nsisUrl -OutFile $nsisInstaller -UseBasicParsing -TimeoutSec 300;
+          $nsisUrl = "https://github.com/hsluoyz/NSIS/raw/master/nsis-3.08-setup.exe";
+          Write-Host "Trying source 1: GitHub mirror...";
+          Invoke-WebRequest -Uri $nsisUrl -OutFile $nsisInstaller -UseBasicParsing -TimeoutSec 180;
+          if (Test-Path $nsisInstaller) {
+            $fileSize = (Get-Item $nsisInstaller).Length / 1MB;
+            Write-Host "Downloaded successfully: $([math]::Round($fileSize, 2)) MB";
+            $downloaded = $true;
+          }
         } catch {
-          Write-Host "Failed to download from SourceForge, trying alternative source...";
-          $nsisUrl = "https://nsis.sourceforge.io/mediawiki/images/4/4a/Nsis-3.09-setup.exe";
-          Invoke-WebRequest -Uri $nsisUrl -OutFile $nsisInstaller -UseBasicParsing -TimeoutSec 300;
+          Write-Host "Source 1 failed: $_";
+        }
+        
+        # Source 2: SourceForge
+        if (-not $downloaded) {
+          try {
+            $nsisUrl = "https://sourceforge.net/projects/nsis/files/NSIS%203/3.08/nsis-3.08-setup.exe/download";
+            Write-Host "Trying source 2: SourceForge...";
+            Invoke-WebRequest -Uri $nsisUrl -OutFile $nsisInstaller -UseBasicParsing -TimeoutSec 300;
+            if (Test-Path $nsisInstaller) {
+              $fileSize = (Get-Item $nsisInstaller).Length / 1MB;
+              Write-Host "Downloaded successfully: $([math]::Round($fileSize, 2)) MB";
+              $downloaded = $true;
+            }
+          } catch {
+            Write-Host "Source 2 failed: $_";
+          }
+        }
+        
+        if (-not $downloaded) {
+          Write-Host "ERROR: All download sources failed";
+          exit 1;
+        }
+        
+        # Verify file exists and is not empty
+        if (-not (Test-Path $nsisInstaller)) {
+          Write-Host "ERROR: Installer file not found at $nsisInstaller";
+          exit 1;
+        }
+        
+        $fileSize = (Get-Item $nsisInstaller).Length;
+        if ($fileSize -lt 1000000) {
+          Write-Host "ERROR: Installer file too small ($fileSize bytes), download may be incomplete";
+          exit 1;
         }
         
         Write-Host "Installing NSIS silently...";
         Start-Process -FilePath $nsisInstaller -ArgumentList "/S" -Wait -NoNewWindow;
         
+        # Wait for installation to complete
+        Start-Sleep -Seconds 5;
+        
         # Add NSIS to PATH
         $nsisPath = "C:\Program Files (x86)\NSIS";
-        $env:Path += ";$nsisPath";
+        if (-not (Test-Path $nsisPath)) {
+          # Try x64 path
+          $nsisPath = "C:\Program Files\NSIS";
+        }
+        
+        if (Test-Path $nsisPath) {
+          $env:Path = "$nsisPath;$env:Path";
+          Write-Host "NSIS path added: $nsisPath";
+        } else {
+          Write-Host "ERROR: NSIS installation directory not found";
+          exit 1;
+        }
         
         Write-Host "Verifying NSIS installation...";
-        & makensis /VERSION;
+        $makensisPath = Join-Path $nsisPath "makensis.exe";
+        if (Test-Path $makensisPath) {
+          & $makensisPath /VERSION;
+          Write-Host "NSIS installed successfully";
+        } else {
+          Write-Host "ERROR: makensis.exe not found at $makensisPath";
+          exit 1;
+        }
         
-        Write-Host "NSIS installed successfully";
+        # Clean up installer
+        Remove-Item $nsisInstaller -ErrorAction SilentlyContinue;
         Write-Host "";
 
     # Step 4.7: Build NSIS installer
@@ -195,7 +260,11 @@ jobs:
         
         # Ensure NSIS is in PATH
         $nsisPath = "C:\Program Files (x86)\NSIS";
-        $env:Path += ";$nsisPath";
+        if (-not (Test-Path $nsisPath)) {
+          $nsisPath = "C:\Program Files\NSIS";
+        }
+        $env:Path = "$nsisPath;$env:Path";
+        Write-Host "Using NSIS from: $nsisPath";
         
         cd installer;
         python build_installer.py;
diff --git a/config.py b/config.py
index e25f837..daaac7a 100644
--- a/config.py
+++ b/config.py
@@ -42,7 +42,7 @@ VERSION = "1.0"
 WINDOW_TITLE = "AI回复连接入口-V1.0"
 
 # 应用版本号（用于版本检查）
-APP_VERSION = "1.5.2"
+APP_VERSION = "1.5.3"
 
 # 平台特定配置
 PLATFORMS = {
diff --git a/version_history.json b/version_history.json
index e2c900c..1203708 100644
--- a/version_history.json
+++ b/version_history.json
@@ -1,4 +1,20 @@
 [
+  {
+    "version": "1.5.3",
+    "update_type": "patch",
+    "content": "[patch] 解决乱码bug",
+    "author": "Gitea Actions Bot",
+    "commit_hash": "7c0667cb39c2795ce9901e141e1a9ff698a4955b",
+    "commit_short_hash": "7c0667cb",
+    "branch": "develop",
+    "release_time": "2025-10-11 16:09:00",
+    "download_url": "https://ks3-cn-guangzhou.ksyuncs.com/shuidrop-chat-server/installers/ShuiDi_AI_Assistant_Setup_v1.5.3.exe",
+    "stats": {
+      "files_changed": 3,
+      "lines_added": 60,
+      "lines_deleted": 5
+    }
+  },
   {
     "version": "1.5.2",
     "update_type": "patch",