from http://www.son240sx.ca/forum/viewtopic.php?t=18492
note ive got no idea who this person is, and he should have introduced himself first. But just for you who are planning to get a psp over the christmas, these could be the psp that came out when psp was introduced to NA, which means the firmware are 1.5 or 1.51, 1.52. You can’t find orginal 1.5ish firmware anymore…or anyone sane enough to sell u one
This means you can download games “no so legally” but still play them, unlike the psp that are sold right now, which has 2.5 or 2.6 firmware
Just a heads-up for anyone whos interested in getting a psp. By no means am i trying to advertise for Treglane, as i have no idea who he is. Just want to let you guys know of a possiblity of it bieng an old firmware
edit downgrade is only for firmware 2.0, but i think the ones that are bieng sold now are at least 2.5* just to clearn things up