I did it of procfw cipl for my friend, but I decided to share with you...
-- This program for fast switching PRO and ME on 6.60 FW. Based on PROCFW cIPL installer.
- Added check PRX's by md5-hash.
- (For developers) Added in sources md52c.exe.
*This program to calculate the md5-hash and write it in a *.c file with u8 array.
*For files not more 4096 bytes (you can increase this in src's).
*Maybe you'll need it when checking the file for integrity.
- Added ultimate check for the integrity of the firmware.
- Returned old method for installing IPL (bacause of some bricks) -> minimized value of EBOOT.PBP.
- Fix in detect installed IPL.
- Fixed detecting PSP model.
- PROCFW Team
+ Bonus: 3xx nand ipl dumper.
Source and download: http://psdev.ru/?p=102.