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This thread is about downgrading my PS3, atm, i am version 4.11 and i want to downgrade to a suitable firmware for making challenge lobbies on cod4/5.

The firmware i need is 3.55.

I do not know if bricking my PS3 is the only option, if there is another option please post it below!

Also, if bricking is the only way, is there a method that is 99-100% working? [By this i mean i dont want to brick my PS3 then it breaks!]

If any of you know a way to downgrade PS3 firmware or even brick it safely.

Thanks.

maybe. I do not work for me. i try to many times send error "Correct Hard Disk Not Found"