Hey!
Ive just tired to downgrade my Fat PSP v3.90 to v1.5.
I have made a working pandora battery and magic memory stick..
I started off turned it off, put in the menory card, then the modded battery, pressed X to install 3.71 M33...
It did it ok, and said to press X to shutdown, so I did!
Put in the correct battery, and then when I turn it on, i now have a RED MENU, with only the date/time and battery level! then after a 10 seconds or so, it will auto shutdown!!!
Ive tired to refresh with the oringal 3.71 (tho mine was 3.90), and it still doesn't work!
So I refrash it again with the custom - with the idea of trying to get into the recovery menu (power off --> right tigger --> power on) and it doesnt do it!!!
So, trying to downgrade fat psp 3.90 using pandora to 3.71 m33, but ive got a red menu and no access to recovery menu
If anyone can help, I reallllly would love you for ever!