RetroCompass
RetroCompass

RG556 — Firmware update

Quick answer

Button combo

SettingsFOTA / system update

Steps

  1. 1Connect to WiFi and charge the RG556 above ~50% battery.
  2. 2Open the FOTA Update app (or Settings system update) to check for the latest official version online.
  3. 3If an OTA update is offered, tap Download, then Install, and let the device reboot to apply it.
  4. 4If OTA fails, download the matching offline package from win.anbernic.com/download and follow its included Android update steps.
  5. 5After it restarts, confirm the new version in Settings → About.
Last verified: 2026-06-20Source: support.anbernic.com

The RG556 runs Android (Unisoc T820), so firmware comes as official over-the-air (OTA) system updates rather than SD-card images. Connect to WiFi, keep the battery charged, and use the FOTA Update app / system update to download and install the latest version; a matching offline package is also published on the Anbernic download portal for when OTA cannot reach you. The latest official build at the time of writing is RG556-V1.15. This is a DRAFT for human review.

FAQ

Where do I check for updates on the RG556?
Use the FOTA Update app (the Anbernic system-update tool) with WiFi connected. It checks online and installs the latest official version over the air.
OTA won't download — is there another way?
Yes. Anbernic publishes a matching offline update package at win.anbernic.com/download; follow the Android update instructions included with it.

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