RetroCompass
RetroCompass

RG405M — Firmware update

Quick answer

Button combo

anbernic.com image+PC flash tool(no built-in OTA)

Steps

  1. 1Back up your saves and copy anything important off the microSD and internal storage.
  2. 2Download the latest official RG405M firmware package from anbernic.com on a PC.
  3. 3Follow Anbernic's included instructions and flashing tool to write the image over USB-C.
  4. 4Keep the cable connected until the tool reports it has finished.
  5. 5Disconnect, boot the device, and run Android first-time setup.
Last verified: 2026-06-20Source: anbernic.com

The RG405M runs Android 12 on the Unisoc T618 and does not have a reliable in-system OTA updater; Anbernic distributes firmware as a downloadable package you flash from a PC over USB-C using the maker's bundled tool and instructions. Because flashing can wipe the device, back up saves and your microSD first. Only use the image that matches your exact model. This is a DRAFT for human review.

FAQ

Is there an over-the-air update on the RG405M?
No reliable built-in OTA. You download the official package from anbernic.com and flash it from a PC over USB-C with Anbernic's tool.
Will flashing erase my games?
It can wipe internal storage, so back up saves first. Files on a removable microSD are usually untouched, but back them up too.

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