I have recently got a new slim psp that's been upgraded to 3.71. I bought a Pandora's battery and magic memory card from ebay as there's no chance I'll be able to get hold of a fat psp to create my own... The screen shows below when booting up: Tachyon = 0x005000000, Baryon=0x0022B200 Nand size 67108864 Model: PSP Slim Press X to install 3.71 M33 Press O to install original 3.71 Press  to dump the nand Press L+R+start+home to restore nand dump phisically (dangerous!) When I press X I get the message: Loading updater modules... Failed -> Error 80020321 loading module nand_updater I'm new to the psp scene, can any-one shed any light? Many thanks!!