Having technical issues with XMB

[TwisTtheTwiTcH]

    Hey there ladies and gents. I'm having some technical issues with my PSP. I had a custom XMB and then I accidentally updated to M33-6. I currently have 5.00 M33-6 and I am not really looking to upgrade because my pandora died on me and I don't have a spare battery.

    I need somebody to help me out, I'd like to get my custom XMB back onto my PSP. This particular PSP is a 1001 series if it is of any importance. I've looked around but I am not sure exactly what went wrong. So some assistance would be much appreciated.

-TwisT