1. Copy all the content on your Vita to a PC or PS3 using Content Manager.
2. Go to settings and do a restore on your Vita.
3. Deactivate and format memory card as well.
4. When all done, restart Vita.
5. Go to the PSN and re-download a game that wouldn't work before. (This re-activates your Vita)
6. It will now work and install fine.
7. Copy back across to your Vita all your Content Manager stuff (Apps/Saves/PSP).
8. All will be working fine now.
2. Go to settings and do a restore on your Vita.
3. Deactivate and format memory card as well.
4. When all done, restart Vita.
5. Go to the PSN and re-download a game that wouldn't work before. (This re-activates your Vita)
6. It will now work and install fine.
7. Copy back across to your Vita all your Content Manager stuff (Apps/Saves/PSP).
8. All will be working fine now.
