I want to downgrade my PSP to 1.50 and i do this:
I was in 3.11.
I upgrade to 3.50 official firmware
i don't have lumines UMD so i can't use the lumines downgrader to get to 1.5 official firmware and then when i have 1.5, upgrade to 3.40oe(newest oe firwmware)
my questions are:
1.- if i'm in 3.50 i need lumines UMD to downgrade?
2.- i'm in mexico and i canīt get lumines UMD
3.- where i can buy it?
4.- is there other method to use OE firmware?