RetroCompass
RetroCompass

RG406H — Firmware update

Quick answer

Button combo

SettingsAbout phoneSystem update

Steps

  1. 1Charge the RG406H and connect it to Wi-Fi.
  2. 2Open Settings, scroll to About phone (or System), and tap System update.
  3. 3Let it check online; if a build is offered, tap Download and Install and keep it plugged in.
  4. 4If no online build appears, download the latest offline image (recent public builds reached V1.35) from anbernic.com and follow its instructions.
  5. 5After it reboots, reopen System update to confirm the new version number.
Last verified: 2026-06-20Source: anbernic.com

The RG406H runs Android 13 on the Unisoc T820, so updating works like a normal Android device: it can check for an online (OTA) build from Settings, and Anbernic also publishes offline firmware images (recent public builds reached V1.35) on its download portal for manual flashing. Keep it on Wi-Fi and charged during the update so it is not interrupted. This is a DRAFT for human review.

FAQ

Does the RG406H update over the air?
Yes. It can check online under Settings → System update, and Anbernic also offers offline images for manual flashing.
Will updating erase my games?
An OTA update normally keeps your data, but back up saves and your microSD first; a full offline re-flash can wipe internal storage.

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