IF YOUR DOING THIS AND DON'T KNOW IT CAN BRICK YOUR PHONE AND PS3 THEN PLEASE PROCEED AND DON'T FOLLOW THE INSTRUCTIONS VERY WELL
Yep as the title says you can unlock your PS3 to run just about anything with a rooted evo.
First off you need to make a nand backup. If you don't do this you will be sorry so just flippin do it!
Next put enable-psfreedom-Evo4G_BDVD.zip on the root of your SD card.
Reboot into recovery
Flash Zip you just put on SD card to EVO and reboot. This may make your EVO lockup on the white screen but it will still work (remember how I said you really should make a nand backup hope you were listening) I was using OMJ and it flashed just fine.
Now with your EVO booted up or locked up at the white screen turn the power off on your PS (fat one turn the switch off in the back slim unplug power cord from back) and plug the EVO in via USB cord. Turn power switch on or plug cord back into ps. Now press the power button and immediately after press the eject if done right it will take an extra 3 seconds to boot up.
Go to games and see if you have an option to install development apps.
Now extract manager.zip to a usb flash drive and then install to the PS3 using the new option under games.
At this point you do have to hook the EVO up and flash the custom kernel every time you want to use or install a non signed app or you want to run an installed non signed app.
Some ROMS like OMJ you can just flash the kernel into and the phone will still work just fine as a phone (no Wifi though). Others will need to flash the kernel or restore a backup with the kernel flashed.
Credit For the EVO Kernel goes to this XDA thread after days of searching and researching I found it here
xda-developers
If you want to read everything about this here is the forum dedicated to it.
PSX PS2 PS3 Scene Modchip & Jailbreak Community
THIS IS INTENDED TO BE USED TO INSTALL NON SUPPORTED OPERATING SYSTEMS AND SOFTWARE AND NOT FOR PIRACY.