How do u downgrade from 5.00

can anyone tell me how to downgrade a 5.00 update.anyone plz.

Pandora and magic memory stick..?

Pandora Battery. You can found how to make your own pandora battery, here:

Slim: YouTube - How to make a Pandora Battery [Step by Step]
Fat: YouTube - How to Hack ANY PSP and get CFW

To buy, the battery, go here: http://www.dealextreme.com/search.dx...dora%20Battery

And, just in case thoso videos, do not tell you how to make a Magic Memory Stick, go here:

YouTube - How to make a magic memorystick (WORKS WITH ALL FW NOOB FRIENDLY)

i have battery and memory stick.already had everything installed and my friend updated it now it wont downgrade again after.

I thought it is impossible to downgrade 5.00 users...

You need old motherboard in PSP x))
If it has old MB, you can flash it by yourself without Pandora Battery & MMC, but only if it has FW 5.03 & lower.
If PSP has lower FW than 5.03, you can update it on 5.03, then you use ChickHEN, then XGenUpdater or something else :)
I flashed my PSP Fat by myself. I updated it on 5.03 then used ChickHEN then Recovery Flasher 1.60 for downgrade FW to (CFW) 5.00 M33-6 & last step of flashing was 5.50 GEN-D3.

Sry 4 my english ^^

I did what the above guy did.
-ChickHEN R2
-Hellcat's recovery flasher v1.60

Except, I stayed on 5.00 m33...too many problems with gen. =P

I usualy Use Hellcats. It's partialy Safer than having your PSP bricked lol.