CFE (Custom Firmware Extender) is a light plugin written by Cpasjuste that allows you to do pretty much all the important stuff irShell does straight from the vsh. 1.9.2 was the last version and with that you could;

- Stream Isos via usb.
- Stream Isos and homebrews via wifi.
- Hook some Vsh menu functions (replace icons function).
- Start a ftpd server while under the VSH (PSP Menu).
- Make some in-game videos with the help of remotejoy from tyranid.
- Reset the PSP with a button while under the VSH (PSP Menu) or in-game (UMD/ISO).
- Power off the PSP with a button while under the VSH (PSP Menu) or in-game (UMD/ISO).
- Change the speed of the PSP CPU/FSB while under the VSH (PSP Menu) or in-game (UMD/ISO).
- Start and stop Usb Mass Storage under the VSH (PSP Menu) while browsing.
- Enable Usb Mass Storage at startup.
- Take a screenshot while under the VSH (PSP Menu) or in-game (UMD/ISO) saved in the PICTURE folder.
- Set a default CPU/BUS speed at startup.
- Set a default brightness level at startup.
- Enable brightness button to go to the max level.
- Fully configurable via a configuration file.