On Windows, follow these directions for changing it back to “zip”. It's a zip file with the extension changed to “_ip”. Contains all the BIOS files listed above. Speaking of where to download BIOS files, you can grab all of them below. Make sure every BIOS is named exactly as you see it above. Depending on which website you downloaded them from, they may be named differently. Hopefully, I can make RetroArch easy for everyone :) However, that's exactly the reason why I created this tutorial.

The drawback with RetroArch is that it wants to do everything and cook your dinner! It's loaded with an overwhelming amount of features and customization. Single-system emulators don't fare well on large screens, but RetroArch does. RetroArch is particularly ideal for Android tablets and Play Store supported Chromebooks. There may be some instances where you'll have no choice but to use RetroArch. The available single-system emulators only cover the usual assortment of popular systems. The fact that RetroArch covers every video game system gives Android users a huge advantage. Atari Lynx, Neo Geo Pocket Color, WonderSwan, Game Boy Color, Game Boy Advance, NES, SNES, Virtual Boy, PC Engine/TurboGrafx-CD, PC-FX, Game Gear, Genesis/Mega Drive, Sega CD/Mega CD, Sega Master System, PlayStation 1, Saturn, PSP, and more! It's an open source emulator available for every operating system, and is genuinely 100% free.

RetroArch is a multi-system emulator that supports pretty much every video game system.

Retroarch ppsspp memory card setup