Wow…writing about something as fast moving as the enthusiast development community and expecting it to remain accurate for any length of time is always going to be folly, but I didn’t expect yesterday’s post to become outdated this fast. In days we’ve gone from a minor buffer overflow being discovered to a fully functional technique to downgrade a 2.00 PSP to the 1.50 firmware, allowing homebrew software to be run on any PSP currently on the market. It’s a deceptively simple technique (the buffer overflow makes it execute a version of an existing version changer which makes the PSP think it’s a 1.00 while still being 2.00, which then means it will run the 1.50 update and overwrite 2.00) but I tried it on my white PSP which shipped with 2.00 and it works perfectly.

I’m sticking with 2.00 on mine for now just because I like the elegant functions of the added features over their homebrew equivalents and I’d prefer a way to run homebrew applications natively on 2.00, but at least now I’m safe in the knowledge that I can drop back to 1.50 in the future if a real homebrew killer app appears. Kudos to the guys who finally made it happen.