diff --git a/lib/app_upgrade_simple.dart b/lib/app_upgrade_simple.dart
index 259bd30..abdc219 100644
--- a/lib/app_upgrade_simple.dart
+++ b/lib/app_upgrade_simple.dart
@@ -376,8 +376,7 @@ class AppUpgradeSimple {
       // 优先比较 buildNumber
       if (versionBuildNumber > currentBuildNumber) {
         hasUpdate = true;
-      } else if (versionBuildNumber == currentBuildNumber) {
-        // buildNumber 相同，比较版本名
+      } else {
         if (versionName != null && compareVersionStrings(versionName, currentVersionName) > 0) {
           hasUpdate = true;
         }
@@ -877,14 +876,12 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
       debugPrint('📱 当前版本: $currentVersion, 构建号: $currentBuildNumber');
       debugPrint('🎯 目标版本: ${info.versionName}, 构建号: ${info.versionBuildNumber}');
 
-      bool isUpdated;
+      bool isUpdated = false;
       if (info.versionBuildNumber > 0) {
         if (currentBuildNumber > info.versionBuildNumber) {
           isUpdated = true;
-        } else if (currentBuildNumber == info.versionBuildNumber) {
-          isUpdated = AppUpgradeSimple.compareVersionStrings(currentVersion, info.versionName) > 0;
         } else {
-          isUpdated = false;
+          isUpdated = AppUpgradeSimple.compareVersionStrings(currentVersion, info.versionName) > 0;
         }
         debugPrint(
             '📊 构建号比较: $currentBuildNumber vs ${info.versionBuildNumber}, 版本比较(如需): ${info.versionName} -> $isUpdated');