Help with downgrading

[MHF Kaiser]

well i already have PANDORA Batt and MMS. i tried all the guides on youtube. but it doesn't work... im on PHAT 3.73 OFW. can anybody help me with this... coz its really pissing me off now...

[ultragoregrind]

http://forums.maxconsole.net/forumdisplay.php?f=130

[pWnd.]

do you have other psp that has cfw

[pWnd.]

and did you injected ipl to memory stick?