Pro Evolution Soccer PES 2016 is not just a game, but it unites the body, soul and spirit together. If you still have the 2015 install on your device, then I think you should upgrade to 2016 version.
==>New Boots Adidas Pack.
==>Fix Jersey number of BPL ( Barclays Premier League ) invisible.
==>And many others including the latest addition of skill players, etc.
2. Download and Install PPSSPP Gold from the above link
3. Move PES2016.iso that you downloaded to SDCard >> PSP >> GAME
4. Open PPSSPP Gold that you installed and Find Games, then tap PES2016
Now you can start Play the game, and enjoy!