I was able to put Final Fantasy VII on my PSP when I downloaded it onto my PS3 during E3 last year, but it looks like you can't transfer stuff from a PS3 to a CFW PSP anymore. I had heard about still being able to trick Media Go with the version.txt, but from the poking around I've just done, it looks like Sony stopped that, too.
I used 5.00 M33-6 when I put FF7 on my PSP, but my PSN account info got replaced when I installed 5.50 GEN D-3 FINAL (or whatever the newest GEN is called, I got it just so I could play Phantasy Star Portable 2.) I remember that you used to be able to activate your PSN account on a CFW PSP, you just couldn't access the store, but that seems to have gone out the window too.
If there is still a working method of getting stuff from the PSN onto a CFW PSP, and someone would share, that would be great! If there isn't, I have a Pandora/MMS combo so I can go to 6.20 and downgrade when I want all of my features back. I just really want to play Armored Core 3 Portable, and can't with my current setup, from what I can tell. I do want to get a PSP strictly for OFW, but I'm waiting for news on the 4000/N2000 at E3 before I decide to get a 3000 or not. (I have a Japanese 1000, so I miss out on the comics, which I don't mind too much, but still kinda sucks, and if I get another, I want it to be from the territory that I live in.)
Any help or advice any of you can give would be great.