RetroCompass
RetroCompass

RGB30 — Firmware update

Quick answer

Button combo

balenaEtcherwrite RK3566 imagemicroSD in TF-OS slot

Steps

  1. 1Download the latest RGB30 OS image (ROCKNIX or stock JELOS), an .img.gz file, from the project's releases page.
  2. 2Insert a 16GB+ microSD card into your PC with a card reader and open balenaEtcher.
  3. 3Choose Flash from file, select the image, pick the microSD card, then click Flash.
  4. 4Power the RGB30 off, put the card in the lower TF-OS slot, and power on to boot the new image.
  5. 5On first boot, open the menu and run System Settings to create the game directories on the TF-Game card.
Last verified: 2026-06-20Source: rocknix.org

The RGB30 has no locked stock firmware in the usual sense: you run a Linux OS written to a microSD card, so updating firmware means flashing a new OS image. Download the RK3566 image for the RGB30 (the stock device shipped on JELOS, now succeeded by ROCKNIX), write it to the lower TF-OS card with balenaEtcher, and boot from it. Most builds also offer an in-OS online update once you are connected to Wi-Fi.

FAQ

Which microSD slot holds the OS?
The lower slot, labelled TF-OS, holds the OS image. The second slot, TF-Game, is for your ROMs.
Do I have to re-flash for every update?
No. After the first flash, ROCKNIX can update itself over Wi-Fi from the system menu; re-flashing is only needed to switch OS or recover a broken card.

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