FW 6.30 downgrade

[abuelhub]

I have done upgrade to my psp 2004 slim and lite from FW 3.90 to 6.30.
can I now downgrading to a FW that I can download games an play them on it?
Code 8b
motherboard: Ido not know, PSPIdent 0.4 can not read my HD(an error accourd)

[Qmark]

6.30 has full access to Playstation Store.
You can download games there and play them, but having actual UMDs is better whenever possible.