Here is a recommendation...you DON'T have to do this to have a successful install of .215 leak. But, if you are having issues with your phone it might help alot. Before installing .215 do a factory reset. Yes, you will have to re-install the third party apps that you downloaded (your pics, videos and such will be safe if you have them on your EXTERNAL sdcard). Starting from a clean system is always worth it. After the factory reset just follow MattyP's instructions. Again, you don't have to do the factory reset to have a successful install of .215.