I have spent the last 4 hours messing with this, reading numerous posts, and still cannot figure out how to do this. So here goes.
I started with PSP-1000/1001 TA-082 with firmware 3.03... then after reading some thread, updated it to 3.10 then to 3.50 then downgraded it to 1.5
i used UMD emulator which works, but won't load the game (with umd disc in the psp).
i assume this is because the game i wanted to play requires higher firmware, however devhook only supports up to 3.7 I think, so I did not install that
The game I wanted to play is Patapon 2 which I think is firware 5.03
I also is confused on alot of the guides because they all say for psp 2000/3000 and I have the 1000 (old i know, so less information on them)
I don't mind installing custom firmware, but the guides I found requires me to upgrade to OFW 5.02 or so... but by downgrading my ta-082 from 3.5 to 1.5 I can't install any OFW anymore.....