I am concerned that my firmware may be corrupted or damaged in some way, as my PSP cannot go into sleep mode - it simply shuts off. The system is already on 6.20 and had CFW installed. I removed the CFW and have the update for 6.20 on the stick, but when I try to install it it errors out saying it is already this version and does not require an update. So, what would be the best way to force a reinstall of the 6.20 OFW? Thanks in advance!