Custom Firmware Extender is a “Custom Firmware Extender” for Playstation Portable.

Changes:

– Fixed a bug in usbhost iso redirection, now normal mode (umd inserted) is working great. No need to change anything in recovery, if you want more compatibility, just put an umd in the drive before using usbhost iso redirection, else do not put any umd. (thanks psp.padawan for our sharing)
– Fixed a few bugs regarding usb mass storage. (thanks madridi4ever for all the reports)

http://forums.qj.net/f-psp-development-forum-11/t-custom-firmware-extender-18-125136.html