This can come in handy if you want to make it for someone or want to make your Pandora usable again or something along those lines....
First of all use are probably wondering how do you do it.... Well in order to-do it this you need:
PSP
USB CABLE
COMPUTER
last but not least COMMON SENSE lol
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Now first off all download this file >>>
http://www.megaupload.com/?d=8POZESP6and after its downloaded put your psp in usb mode and extract it and place it in PSP/GAME/ folder
disconnect it from USB mode, Run the application should be in game folder...
You should see a blue menu with yellow(ish) writing once that continue threw until you are at the main menu,
click on Memstick and MS-IPL options... once done that click repartition and format Memstick aka mspformat
once that's done turn on your psp go into USB mode, Run rains mms maker for 5.00 m33-4
http://www.filefactory.com/file/af9c9bb/n/25437_RainsUltraLiteMMS500v12_zipthen you should be able to make a mms... if you get IPL error just run the application again and go into ms options once again and click install ms0:/MSIPL.BIN to the mem stick.. you should be able to downgrade to 5.00 m33-4 or upgrade depends your ofw...
Made this guide my self