PLEASE HELP ME I WAN DOWNGRADE FROM 5.01 to 4.xx m33-3

My PSP now 5.01 but i can not do anything … i hope have sum one can teach me how step by step … i have pandora battry … please teach me .. help
Answer #1
Moving
Answer #2
# Grab your PSP
# Remove the regular battery and memory stick if applicable.
# Insert the Magic Memory Stick into the PSP
# Remove power cord and insert the JigKick Battery into the PSP.
# The PSP will boot up automatically showing a Menu on screen.
# Follow the on screen information and options
Hope that helps, if you have any questions I’m happy to help