First off, yes, i've done a search.
A colleague lent his PSP to a friend, and they "helpfully" upgraded it to the stock 3.30 firmware. Is there any way to downgrade it to 1.50 and then go through the route back up to 3.30OEA?
(I put mine onto 3.30EA yesterday, haven't had a chance to try any full res video encoding yet, darned!).
Thanks in advance all.