Having troubles with PSP games not saving on PS3? Try this out it may help. –
So I have encountered some games that do not work because of the fact it cannot create and save file. Well I went around looking and found a collection of PlayStation Portable save files and then from the PS3 copied them from USB to the HDD using the XMB save tool. Note FTP does not work at all, you can load the game on your PSP and make the file to transfer or go to gamefaqs and they usually have the saves for most games. I will be testing this out in JPCSP as well to see if their saves will work as well. Doing this I have gotten a few games to work that would boot up but not save. Just thought this might be useful to some as it got street Fighter Alpha 3 MAX working for me using a blank save file I pulled from a friends PSP and got another working using a save file from gamefaqs.
PS3 CECH-2501A [CFW] & CECH-3001 [OFW]/ PS2 SCPH-3901 & SCPH-7501/ PS1 SCPH-5501
Mod Cobra 4.46 v7.00 w/ E3 Flasher [CFW] & Cobra ODE 4.50 [OFW]/ Mod HDD-OSD [Phat] & Modbo 4.0 [Slim]/ Mod MM3
HDD 1tb [CFW] & 640gb [OFW]/ HDD 640gb & OPL v0.92 w/ 1.5tb SMB