M2 Duet System - Firmware Download

Below is a link to the current firmware update file for the Duet System - M2T transmitter and M2R receiver, plus the DCHT portable transmitter. This is a zip file, after downloading extract it into a temporary folder. Use the Wireless Designer™ program to update firmware, instructions are found here.

Note: This is a link to the Wireless Designer firmware update file, which bundles the latest firmware for multiple products. Wireless Designer will automatically choose the right firmware images from the file.

In the past, there were two firmware choices offering either unencrypted digital transmission ("DUET" mode) or AES-256 encrypted digital transmission ("DCHX" mode). The original unencrypted mode firmware was the version 2.x series, and the new encrypted mode firmware was the version 3.x series. If encrypted mode firmware is installed into M2T or M2R units, they are identified in Wireless Designer as M2T-X and M2R-X to indicate that they are operating in encrypted transmission mode.

This has changed! Now both encrypted and unencrypted modes are contained in a single firmware load starting with M2T version 4.0.01. In this version, a new compatibility mode setting exists with two options, "DCHX" (encrypted) and "DUET" (unencrypted). Both compatibility modes are already available in the M2RA. Note: With M2T version 4.0.01 firmware installed, Wireless Designer version 2.1.01 or higher is required.

M2 Duet Firmware Update v23Apr2024
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