I tried to install the 2.09 firmware version and it worked well, but now i have'nt any drums or songs anymore.

I did have put a 4 GB SD card in my amp, and since then my amp was acting weird. I didn't know then you shouldn't place a SD card more then 2 GB.

Is this an big problem for my amp? Also when I'm in the menu of songs/drum/recs/sd, my amp restarts after a few secs. Is my amp screwed?