Lumines hangs on game save

[zerosozha]

I just unbricked my PSP (phat version, ta79 motherboard) to 3.80 M33-5, and among some minor glitches and errors (certain menus on the XMB won't open until I restart the system), one of the bigger problems I have is that when I'm playing Lumines, the game hangs upon trying to save, so I can't make any progress in Challenge Mode and Puzzle Mode. I'm using a Lexar 2GB memory stick which has worked fine in the past. I've never had this problem until just recently. Any suggestions on what to do? I'm considering just getting a new PSP.

EDIT: Forgot to mention, haven't tried other games yet, but it still bothers me since Lumines has worked just fine in the past.

EDIT#2: Lumines saves SOMETIMES, and I could not get any of my other games (Darkstalkers Chronicles, MGA 1 and 2, MGPO) to save.

[mike_jmg]

try restoring default settings or formating flash1 through recovery

[zerosozha]

Formatted flash1, bricked