diff --git a/lib/main.js b/lib/main.js
index 2a6bc6c..dda5dc3 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -218,19 +218,30 @@ export async function downloadUpdate(options, eventListeners) {
         originHash: currentVersion,
       });
     } catch (e) {
-      logger(e.message);
-      logger('diff error, try pdiff');
+      logger(`diff error: ${e.message}, try pdiff`);
+      try {
+        await Pushy.downloadPatchFromPackage({
+          updateUrl: options.pdiffUrl,
+          hash: options.hash,
+        });
+      } catch (e) {
+        progressHandler && progressHandler.remove();
+        report(options.hash, 'error');
+        return;
+      }
+    }
+  } else if (options.pdiffUrl) {
+    logger('downloading pdiff');
+    try {
       await Pushy.downloadPatchFromPackage({
         updateUrl: options.pdiffUrl,
         hash: options.hash,
       });
+    } catch (e) {
+      progressHandler && progressHandler.remove();
+      report(options.hash, 'error');
+      return;
     }
-  } else if (options.pdiffUrl) {
-    logger('downloading pdiff');
-    await Pushy.downloadPatchFromPackage({
-      updateUrl: options.pdiffUrl,
-      hash: options.hash,
-    });
   }
   setLocalHashInfo(options.hash, {
     name: options.name,