Originally Posted by pdario
It is a month or two now that I can't update any paid app, as the APK sent is invalid!
I have the latest Play Store and Play Store Services apps on SGS2 v4.1.2 stock rom.
I tried deleting both data and cache of both, I uninstalled the old app and also tried downgrading both Play Store App, but nothing worked.
I found that the APK files I receive for paid apps are not standard zip files, they seem corrupted or encrypted: can this be?
Can anybody Help?
I think you cleared data and cache in the settings.
As you say, it didn't work in settings, you have to go to android recovery mode to clear cache.
I don't own this device. So I can't tell you how to enter recovery mode. You can Google it.
Once you enter recovery mode, there will be an option to clear cache. It clears cache of all the apps.
If you want, you can use custom recovery modes to clear cache.
After clearing it, reboot system and then try again to access.
Hope, it works.
Press thanks if I have helped you.
---------- Post added at 02:01 PM ---------- Previous post was at 01:57 PM ----------
Downgrading Google Play app doesn't solve the issue in any way. It may complicate the issue even more.
The apk files will be encrypted as it is a paid app. I suppose.
Someone correct me if I am wrong.