7520 upgraded to 4.1 2 days ago without any trouble. tried loading bb reply this morning and the bb hasnt worked since. The main screen will show, but cant get the radio to turn on. The bb is scrolling extremely slow also, kinda like when the processor on a pc is overloaded. I restored to yesterday's backup, but still no radio. Now the battery indicator is red too. I know that the battery is ok though, because I put it in my old 7510 and it works.
Any thoughts or suggestions?
TIA