Updating psp slim firmware
If you ever power your PSP off simply run this application again to enable custom firmware.
The custom firmware will stick until you totally power your PSP off.
As mentioned earlier when you normally press the power button the PSP will sleep, to totally power the PSP off you need to hold the power button down for 5 seconds.
I have personally tested and made this firmware permanent on my PSP 1000 and a friends PSP 2000 (Non 88v3).
Instead of enabling people to run homebrew, the PSP hacking groups have started building their own PSP custom firmwares.
Their firmwares are nearly identical to the official ones, only better.
To update the PSP simply extract the PSP folder from the 6.60 update RAR file and move it to your PSP's memory stick.
The only thing that will remove this is by upgrading to a newer official firmware, which at the time of writing does not exist.
As its been over 2 years since the last official PSP update was released its unlikely any more system updates will be released by Sony.
For PSP's that can not permanently install custom firmware copy the Fast Recovery folders to the PSP\Game folder memory card.
This allows you to easily carry around more than one game, and helps to save your PSP's battery as it does not need to power the UMD drive when playing games.
You can also convert your old PS1 games and play them your PSP.
If you are unsure about anything just use the PROUPDATE and enjoy custom firmware.