Get ready to play your favorite PSP titles with the PPSSPP emulator without a jailbreak on your iPhone, iPad, or iPod Touch running iOS 8.1.1. Of course the newer your device the better the emulator will work. One more thing, yes you are able to use a PS3 controller with your device for the best experience.
How To Install PSP Emulator
Step 1. Launch Safari on your device.
Step 2. Navigate to iEmulators.com on your device.
Step 3. Tap on the apps tab and scroll down until you see PPSSPP.
Step 4. Tap install, then install again, now you can back out of Safari.
Step 5. PPSSPP, the PSP Emulator, should now be installing.
Step 6. When PPSSPP is installed, fire it up, and you’re done.
How To Install PSP Games (ISO)
Step 7. You can download game by navigating to Coolrom.com and download your ISO and CSO files.
Although the speed will not be the same as a jailbroken device, it is still playable. Enjoy!