I have two PSPs, each flashed with 3.40 oea.
The first PSP is able to run homebrew and other apps just fine, however the other PSP freezes on most homebrew apps (such as SNES) while other homebrew loads just fine. I tried both memory sticks on either unit, and the first one is always able to load whatever I throw at it, but the second one gives problems.
Should I downgrade and then upgrade again? How would I go about downgrading the 3.40oe? Drop the 1.5 update in the recovery folder in game?