How do I downgrade my PSP 3000 from OFW 6.30 to 5.03?

[LordDominico]

I am going to downgrade to 5.03 so I can install CFW onto my PSP 3000.
I don't intend on buying a pandora battery for this process or the CFW process.

 

[Shibil]

There is no way to downgrade psp 3000 from 6.30 to 5.03