Sorry for bumping a rather old thread, but I think it's better than creating a new one on basically the same topic.
I've just sent my Lumia 1520 in to get its cracked screen replaced. From my experiences no matter what needs to be replaced/fixed, those guys always perform a hardreset beforehand. Which of course means that I'm going to lose all my app and game data.
I've read through this thread and understand that the OS won't let you use apps (and more importantly app data) stored on your SD card after a hardreset.
But what about this approach:
- access the hidden system folder on the SD card, that contains all installed apps/games and their data (how to do that is described somewhere here on the forums)
- backup its content
- perform the hardreset and let the OS format the SD card
- let WP download all apps that have previously been installed again (make sure they're stored on the SD card, just like before)
- access the hidden system folder again and replace its content with that previously backed up
It's not unlikely that this isn't going to work, as I understand that WP may notice differences between the certification information stored along each app and the value that has been stored in the registry. No idea, since I don't exactly know how WP handles these things. If it's not gonna work, it could possibly work if not the entire content from the hidden system folder is restored, but only the app data. Kinda time consuming, but well worth it. If it works, that is.
What do you guys think? Possible or not?