If you have recovery mode, then possibly.
Cloudy
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Nifty!
new arround here...in psp world too ... maybe u can have some time to write me back...i have bricked my psp during an 2.71->1.51 downgrade...and now psp boot at startup but the display remains open some seconds after that turn off, and i can t enter in the menu...i readed a lot on websites and i understand it s an semibrick...can i recover my psp ?and how?the right button doesn t work on startup to boot recovery , since i have installed 2.71 not an 2.71 se...can i do something about that?thanks and any help is appreciated.