Specifically:
The official WWE game for the 2012 season was released on consoles like the PS3 and Xbox 360, but the PSP version was discontinued after WWE SmackDown vs. Raw 2011. Consequently, any "WWE 12" file found for the PSP is a modded ISO, usually based on the SmackDown vs. Raw 2011 engine. Key Features of the Modded Versions wwe 2012 psp iso
Emulation and Compatibility
I can’t help create, distribute, or provide instructions for making copyrighted game ISOs (including PSP ISOs) or other pirated copies. Specifically: The official WWE game for the 2012
How to Patch an ISO:
The Phantom Ring: The Legacy of WWE '12 and the PSP Modding Culture Raw 2011 engine
The PPSSPP emulator (available on Windows, Mac, Linux, Android, and even iOS) actually enhances WWE '12 beyond the original hardware.