The common feature of all custom firmware available for the PSP is to relax the signing process for PSP applications, so that applications that developers that aren’t Sony approved can be installed.All forms of CFW will mention whether or not they are permanent.Open 661 PRO-C Fast Recovery (PRO), and wait for your PSP to reboot. When you turn off or reboot your PSP it will go back to original firmware until you click fast recovery again.If you’re happy doing this (especially if you just keep your PSP in stand by), then you can stop here (PRO can delete all CFW files but Fast Recovery).
The Hackinformer guide will inform you whether this process is compatible with your PSP.
For PRO firmware, open up the CIPL Flasher utility that came with your custom firmware, and once a black screen with white text opens, press the button that corresponds with ‘install CIPL’. Now if you go to system System Information on your PSP, it should now say you are running the custom firmware you desired. All cfws like to modify the system information screen to show what custom firmware you’re running. If ‘System Software’ shows just a number and your full mac address is shown, then you are running official firmware. Official firmware 6.61 has been cracked, and comes with internal system fixes.
Custom firmware will add their moniker to this segment (e.g. If you are running 6.60 then you can comfortably stay on that version, but other versions will benefit from a systems upgrade.
Extract your folder here as if you’re overwriting the folder, as your computer should only add the new files.
Once done, you can now disconnect your PSP from your computer. You should now see some new exciting options (examples from PRO-C)! Prepare a brew and dig out the biggest pack of biscuits you’ve got, this is going to take a while. What you’ve done is rebooted your PSP into custom firmware mode.