Its 50/50 it will save ok sometimes and then other times it will say corrupt data, i updated my firmware to 4.01 m33-2 and formated the memory stick to see if that would help but it didnt, any ideas why this has started to happen?
Its games in iso,cso.
It says magic gate - unknown so im taking its fake, ive had the stick for about 6 months and its saved games no problem until now.
I'm assuming you have your games saved to your PC.
I'd suggest going to ms0:\PSP and make a backup of your SAVEDATA folder onto your desktop (and any other files you want backed up.)
Alternately you can just plug in your PSP, go to the root directory, copy EVERYTHING, make a folder on your desktop called "PSP Backup", and paste everything in there to do an entire backup of your mem stick (this would be the route I would go).
Now disconnect your psp from your pc, go to Settings in the XMB menu, down to System Setings, and down to Format Memory Stick.
Try that. When you're finished go to Photos, down to Memory Stick and press Triangle then Information.
Is MagicGate supported now?
If so, plug your psp back into the pc and copy all of those files from PSP Backup back onto your mem stick.
If MagicGate isn't supported, then you most likely will need a new mem stick.
having a fake memory card wont always cause problems, i have a fake 4gb sony duo and i have no problems on 5.00 M33-3 and only poblem is the patapon demo downloaded from PSn Store all other demos are working fine for me but check here for ways you might beable to solve this