RetroCompass
RetroCompass

RG35XX Plus — Custom firmware

Quick answer

Button combo

POWER(boot CFW from TF1)

Steps

  1. 1Pick a publicly released CFW for the H700: muOS, Knulli, ROCKNIX, Batocera, or MinUI.
  2. 2Download the device build and write the image to a spare TF1 (OS) microSD with balenaEtcher.
  3. 3Keep your ROMs on the TF2 card; many CFWs read games from the second card.
  4. 4Insert the CFW card in TF1, ROM card in TF2, and press POWER to boot.
  5. 5Follow the CFW's on-screen first-run setup (Wi-Fi, theme, ROM paths).
Last verified: 2026-06-20Source: anbernic.com

The RG35XX Plus is a well supported Allwinner H700 target, so you can run community operating systems such as muOS, Knulli, ROCKNIX, Batocera, or MinUI by writing their public image to a microSD with balenaEtcher and booting from the TF1 (OS) slot; your ROMs stay on TF2. Because each OS lives on its own card you can keep the stock Anbernic card and swap cards to switch systems without erasing anything. GarlicOS for the H700 exists only as an early alpha and is not recommended for everyday use yet. Use only publicly released builds; this is a DRAFT for human review.

FAQ

Which CFW is easiest to start with?
muOS and MinUI are popular simple choices; Knulli and ROCKNIX (EmulationStation-style) offer more features. All boot from a TF1 card written with balenaEtcher.
Can I keep stock OS too?
Yes. Write the CFW to a separate TF1 card and swap cards; your original Anbernic OS card is untouched.

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