Hey Every One...

[sofiya]

HEY.....
This is SOFIYA..form CHINA.
I m a MEDICAL STUDENT......
love playing games in free time...
Bought a new PSP and trapped in a problem.
WISHING FOR SOME SOLUTION FOR MY MIGHT PSP .....I HAVE JOINED AS A MEMBER.....
PROBLEM: i have upgraded my PSP with v3.72 from 3.60 on the second day ...

wanna DOWNGRADE IT TO ANY COMPLATABLE VERSION FOR PLAYING ISOs...CSO GAMES

[Andromeda]

Welcome, you need a pandoras battery and mem stick to downgrade to 1.50 then up to a custom firmware (CFW)

[VeryThinPSP]

This should help you, and welcome to the site.

YouTube - downgrade slim psp