diff --git a/app/src/main/java/com/gh/common/util/PackageUtils.java b/app/src/main/java/com/gh/common/util/PackageUtils.java
index 412629ed83..7443e04777 100644
--- a/app/src/main/java/com/gh/common/util/PackageUtils.java
+++ b/app/src/main/java/com/gh/common/util/PackageUtils.java
@@ -20,6 +20,7 @@ import com.gh.gamecenter.BuildConfig;
 import com.gh.gamecenter.entity.ApkEntity;
 import com.gh.gamecenter.entity.GameEntity;
 import com.gh.gamecenter.entity.GameUpdateEntity;
+import com.gh.gamecenter.manager.PackagesManager;
 import com.halo.assistant.HaloApp;
 import com.lightgame.download.DownloadEntity;
 import com.lightgame.utils.Utils;
@@ -201,7 +202,7 @@ public class PackageUtils {
             while (entries.hasMoreElements()) {
                 ZipEntry entry = ((ZipEntry) entries.nextElement());
                 String entryName = entry.getName();
-                if (entryName.contains(".RSA")) {
+                if (entryName.contains("META-INF") && entryName.endsWith(".RSA")) {
                     InputStream is = apkFile.getInputStream(entry);
                     CertificateFactory cf = CertificateFactory.getInstance("X.509");
                     X509Certificate cert = (X509Certificate) cf.generateCertificates(is).toArray()[0];
@@ -264,7 +265,7 @@ public class PackageUtils {
         if (TextUtils.isEmpty(packageName)) {
             return true;
         }
-        boolean isContain = com.gh.gamecenter.manager.PackagesManager.INSTANCE.isInstalled(packageName);
+        boolean isContain = PackagesManager.isInstalled(packageName);
         if (!isContain) {
             return true;
         }