I managed to mess up my SONY tablet. I was doing a hard restore and when the tablet restarted it just stayed on the boot screen (moving yellow graphic). It stayed on that for 4 hours before I just shut it down by holding the power button. Is it possible to restore it from the SD card? I was trying to find an OS image to use (I live in the United states) I would like to avoid having to send it to SONY for repair. I purchased it 2+ years ago so it is out of warranty. any help appreciated.