PSP-Hacks.com

Description:
Dark_AleX's 3.03/3.10 OE Mix for the Undiluted Platinum PSP mod chip. Features:

• 3.03 vsh, which you can customize.
• When you execute a psp or psx game, or a homebrew, OE will switch the nand to the psp one (containing 3.10 OE) automatically so you will be able to play psx and psp games in the higher firmware, and since it will run on the psp nand, you won't have problems with psx games or with 333 Mhz.
• When you recover from sleep mode, OE will also be back to the nand you were, so you don't need to press L (in fact, you must not press it :p)
• You can access both flashes via usb in the recovery