Ultimate Flash Operation is a flasher for PSP, cfw 3.30/3.40 OE-A, IE-A, LE-A, with many features.

UFO v4.0 Features:

–3.52 M33 support
–All menus redone
–All previously found bugs fixed + more
–strengthened security (if bad flash, then it reflashes original file)
–Fixed file browsing functions to work correctly (runs lua files and views pics)
–Still very much noob friendly
–LOLstation is now working flawlessly on 3.30/3.40 OE-A
–More to come real soon