PSP Downgrade 2003 slim v 5.04 to 3.71 m33 plz help

[54m33r]

Hello, Can you help me downgrade my psp slim 2003 i want to install custom firmware 3.71 m33 in order to do that i will need to downgrade it I have a pandora batery and Magic mem card

[rex89]

hi, 54M33r, first it was with the firmware that your PSP is coming, we must first know because if it was a recent firmware you will be obliged to apply the update 5.03 and then to chikhen Dave and the cfwloader, so what is the original firmware of your psp when you've bought? or is this the 5.04??

[54m33r]

It was 4.01 Thnx. Although can u plz attach the files for me thnxs!