Diffrent downgrade?

Does anyone know of a way to downgrade from the new 4.XXm33 without using pandora?
cause my friend needs his psp hacked and i cant make a pandora cause i upgraded without thinking about my actions.
: ?
pretty sure i have to use pandora tho.

yup you have to pandora
either with a second psp that has cfw or use one of the easy installers. we have tuts for both in the master tut.