Hi mates ,

i borrowed a psp from my cousin his psp is

MODEL: E12 2006 PB (SLIM & LITE)
220 - 240 V
G
SERIAL NO: P274XXXXX-6
S01-08XXXXX-D

FRIMWARE: 5.03 gen b

and my friend went to hack it with 5.50 and it din go well his psp became a fully brick ( pure black screen ) and he gave me scolding
so i was wondering is there anything i could do to fix or reverse the process & in the future is it possible to upgrade 5.03 to a better version ?

Thank you for your time and helping me