Firmware 3.73 to 1.50

i have firmware 3.73 and i dont know how to downgrade it to 1.50 is there any other way to downgrade without pandoras battery
like hx-1's or something maby an add on if u can help reply or add me on yahoo mesenger ,,, my email is [email protected]

any firmware above 3.50 you need the pandora and magic ms to downgrade to 1.5 then to cfw

any firmware above 3.50 you need the pandora and magic ms to downgrade to 1.5 then to cfw

what is the magic ms? why do we need it with pandora?
thanks.
Yasser.

magic ms is just ur mem stick with certain programs on it to put cfw on ur psp...the pandora battery is need to put ur psp in recovery mode which then you can ubrick it or downgrade...also its the only method to downgrade any ofw above 3.50

http://pspbrew.com/forum/viewtopic.php?t=11076 this will show you how to make a pandora batt and magic ms without a second psp that already has cfw.

if you dont want to make a pandora batt you can always buy a datel tool battery(a premodded battery)

thank you amaric for your help.
i'll try to build one.

no probs aye