Perhaps the best NES emulator for the PSP console to date. NesterJ has many settings, ranging from graphical preferences (aspect ratio, frame rate, anti-aliasing) and overclocking the processor of the PSP, as well as various features such as quickly saving the game right where you left off.
NesterJ works on all PSP models - 1000, 2000, 3000, PSP Go and e1000. To install the emulator on the PSP must have a firmware console, the original firmware will not work.
Download the archive with the emulator and unpack it. Then go to the folder "Roms" and download all the games in it, and you can download directly in compressed, zipped (zip, rar) format, the emulator will see them, you don't need to unpack the games from the archives.
After downloading all the necessary games, take the entire root folder from the unpacked archive, with all the files "NesterP" and copy it to the PSP card into the directory "PSP" - "GAME". After that, start the console and go to "Game" - "Memory Stick", where we choose and run the emulator. To enter Emulator's settings, you need to turn stick to the left, and then in the opened menu, you can set the necessary parameters. The peculiarity of navigation in this emulator is the opposite setting of the buttons, i.e., not as usual. PSP button "X" means "selection" and the "O" button means "cancel", but vice versa.