6.61 Infinity + PRO-C2
Permanent-Patched Custom Firmware

The 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.

In combination with Davee's Infinity Firmware you can easily permanent-patch this custom firmware to your PSP!

[Tutorial] How to install Infinity & perma-patch 6.61 PRO-C2