The "Minimum Edition" CFW by neur0n is an alternate Custom Firmware for those who want to stay up to date and don't want to use Pro CFW. It has alot of features and everything you need for the ultimate CFW experience!

1) Download and install the latest Official Firmware 6.61 if you haven't already

2) Rename the Update-file to "661.PBP" and put it at "ms0:/PSP/GAME/UPDATE/661.PBP"

3) Download the 6.61 ME-2.3 {OFW Version} Custom Firmware and extract the ZIP-Archive

4) Copy the "me_installer" folder to your "PSP/GAME/" directory

5) Run the "Update Launcher for 6.61" from the XMB and install the CFW

6.61 ME-2.3Permanent Custom Firmware

6.61 ME-2.3
Permanent Custom Firmware