PRO Firmware is an 'aftermarket firmware' for Playstation Portable by Team Pro to continue to provide you with new features, even after Sony drops the plattform and allows you to develop your own applications for PSP.
How to install the 6.61 PRO-C2 CFW: Show/Hide
1) Download and install the latest Official Firmware 6.61 if you haven't already
2) Download the 6.61 PRO-C2 (14-02-2015) Custom Firmware
3) Extract the ZIP-Archive and copy everything to your "PSP/GAME" folder
4) Run the "661 PRO-C Updater" from the XMB and install the CFW
5) To make the CFW permanent run the CIPL-Flasher Tool
