So whilst bored this weekend i went ahead and put some custom firmware on my PS3, using 'Kweam CFW 3.55' it took all of 5 minutes. installed SNES, Mega Drive and Final Burn Next emulators which all work perfectly and setup an FTP server on the PS3 so its easier to transfer stuff to the consoles HDD.
Also put MultiMan on which basically plays 'backups' and played a copy of the NBA Jam straight from a usb flash drive, then also copied it to the HDD after.
There also a util called 'Wipe History' which wipes everything that they reckon sony will be looking for, but who knows if this will work. Im not too bothered as custom firmware will open up the PS3 to alot more usefull stuff than i get from PSN.