How to get custom fireware 5.50 on my psp 1000?

well if ur psp is already at 1.50 fw just install cfw from m33 latest is 5.00m33-5 i think just look on youtube for cfw and how 2 install them also u dont need pandora's battery and magic memory stick 2 do this since this is 4 ppl that have ofw 3.51 and not sure but since u downgraded 2 1.50 u might look 2 c if u need the 1.50 kernal so u can switch back from 1.50 and latest cfw so u can still use programs that require 1.50. everything is on youtube