Well Finally bothered to upgrade my PSP 1k Firmware from 5.00 M33-6 Prom 4 to 6.39 ME2

Im finding my saves that was made with Prom required (Like God of War Ghost of Sparta) register as corrupt so I have some more games to start again... however I have noticed that its a bit faster with the memory stick than my old firmware with the "FastMSMod" at least in the XMB and games I've tried