If you are running OpenTX 2.1.9, you might wonder if it is time to upgrade to modern firmware like EdgeTX.
In Companion, click the Write Firmware to Radio icon (usually depicted as a transmitter with a write arrow). Verify your radio profile is correct, load your 2.1.9 .bin file, and click Write .
For hobbyists using older hardware, this version is more than just a legacy download; it’s a necessity.
This happens if your SD card contains files from a newer or older version of OpenTX. Wipe the card and extract the exact 2.1.9 SD card structure. opentx 2.1.9 download
The Ultimate Guide to OpenTX 2.1.9: Features, Installation, and Downloads
It’s a fair question. However, OpenTX 2.1.9 remains popular for a few key reasons:
Released in , version 2.1.9 was the final, "polished" stable release of the 2.1 branch. For pilots using the FrSky Taranis or the classic Turnigy 9X , this version was the gold standard—it brought stability and essential telemetry improvements that made older radios feel modern. The "Ghost" in the Installer If you are running OpenTX 2
: It lacks native support for many modern internal and external modules, especially those requiring "CRSF" (Crossfire) or ExpressLRS at high refresh rates.
Version 2.1 introduced completely new telemetry handling and requires a different sound pack than the older 2.0 version. You must download the corresponding SD Card Sound Pack for version 2.1 from the official OpenTX Downloads Page and load it onto your radio's SD card before flying.
Navigate to the OpenTX GitHub release page (you may need to search "OpenTX / opentx releases" if links break over time), or use the direct archive path: For hobbyists using older hardware, this version is
: Provided robust support for the FrSky Taranis X9D, X9D Plus, and X9E.
This version is specifically recommended for older 8-bit radios (Atmega64/128) as later OpenTX branches (2.2+) focused on ARM-based hardware.
Select the relevant to your computer operating system. Download the file and install Companion 2.1.9 . Downloading the Firmware (Radio Firmware)
Before making any changes, always back up your existing radio data. Open .