ArcoSky GX12: Dual-Band Control with a Clear Firmware Plan

The GX12 radio controller listed by ArcoSky brings 2.4GHz and sub-G 900MHz ExpressLRS control into one handset. Its folding antennas, USB-C connection and monochrome OLED display make it a product worth examining alongside the receiver and software that will be used with it.

The product specification separates two software layers: EdgeTX for the transmitter and ExpressLRS for the RF module. That distinction matters when buyers plan equipment support or updates. A radio firmware update and an RF firmware update are separate decisions.

On 17 October 2026, the EdgeTX project released version 2.12.5, a maintenance update addressing issues including firmware flashing and adding support for further handsets. Its release notes advise users to back up radio and model settings and bench-test their models after updating. This is relevant background for GX12 owners reviewing their software, rather than a statement that ArcoSky supplies every GX12 with that version installed.

For an order enquiry, identify the receiver model, intended operating region and required radio configuration. Ask for the delivered EdgeTX and ExpressLRS versions to be confirmed. The GX12 listing specifies up to 16 channels, depending on the receiver, so the handset alone does not establish the capabilities of the complete control system.

Before changing firmware, verify the exact handset target and supported update path. Keep a recoverable settings backup and complete the applicable ground checks before flight. Frequency availability and transmitter power must also comply with local requirements.

Explore the ArcoSky GX12 product page and the official EdgeTX v2.12.5 release notes.