Install Onion

  1. Download the latest release of Onion (scroll down a bit, expand the Assets section below the changelog, and download the ZIP File).

  2. Move the ZIP file to the root directory of your SD card, right-click it and select “Extract Here”. Then delete the ZIP file. Your SD card’s root directory should now show several folders such as Miyoo, media and BIOS. If you’re on Mac OS or Linux, make sure the .tmp_update folder is there, as it may be hidden on those OSs (on Mac, press Command+Shift+. to display hidden files. On Chrome OS, press the 3 dots icon and toggle Show Hidden Files)

  3. Eject the SD card from your PC, insert it into your MM+ and turn it on. Installation should begin. During installation, you’ll be given the chance to select which cores to activate (you can add/remove cores later).

If you’re using the TBS romset, make sure these cores are checked on the package manager:

Tiny Best Set Cores (Click to Expand)
  • Arcade
  • Atari - 2600
  • NEC - TurboGrafx CD (64 and 128 expansions only)
  • NEC - TurboGrafx-16
  • Nintendo - Game Boy
  • Nintendo - Game Boy Advance
  • Nintendo - Game Boy Color
  • Nintendo - NES
  • Nintendo - SNES
  • SNK - Neo Geo
  • Sega - CD (64 and 128 expansions only)
  • Sega - Game Gear
  • Sega - Genesis
  • Sega - Master System
  • Sony - Playstation (64 and 128 expansions only)

If you’re using the Done Set romset, make sure these cores are checked on the package manager:

Done Set Cores (Click to Expand)
  • Arcade
  • Atari – 2600
  • Atari – 5200
  • Atari – 7800
  • Atari Lynx
  • Bandai – WonderSwanColor
  • Capcom – CPS3
  • Coleco – ColecoVision
  • Commodore – C64
  • GCE – Vectrex
  • Microsoft – DOS (64 and 128 expansions only)
  • NEC – TurboGrafx-16
  • NEC – TurboGrafx CD (64 and 128 expansions only)
  • Nintendo – Famicom Disk Syst.
  • Nintendo – GBA
  • Nintendo – Game & Watch
  • Nintendo – Game Boy
  • Nintendo – Game Boy Color
  • Nintendo – NES
  • Nintendo – SNES
  • Nintendo – Satellaview
  • Nintendo – Super Game Boy
  • PICO-8
  • Ports Collection (64 and 128 expansions only)
  • SCUMM (64 and 128 expansions only)
  • SNK – Neo Geo Pocket Color
  • Sega – Game Gear
  • Sega – Genesis
  • Sega – Master System
  • Sinclair - ZX Spectrum
  • SNK – Neo Geo (64 and 128 expansions only)
  • Sony - Playstation

If you want to use the provided PDF manuals, install the PDF Reader from the Apps section

When the device reboots and enters the Onion menu, turn off the device, remove your SD card and insert it back into your PC.

Next: Installing Tiny Best Set

OR

Next: Installing Done Set