OpenTX 2.1.9 Download: Complete Guide to Installing and Using
You might wonder why anyone would stick with 2.1.9 in a world of color screens and touch interfaces. There are three primary reasons:
Because OpenTX 2.1.9 is a legacy release, it is . To obtain it, you must install Companion 2.1.9 and then use its built‑in firmware download function.
For many users, 2.1.9 isn't just an "old" version; it is the . If you are using any of the following hardware, this is likely the most advanced firmware your radio can officially run: Turnigy 9X Go to product viewer dialog for this item. (with stock board) FlySky TH9X Go to product viewer dialog for this item. Go to product viewer dialog for this item. (standard board) Go to product viewer dialog for this item. and DIY MEGA2560 Go to product viewer dialog for this item. Key Features and Changes opentx 2.1.9 download
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 .
OpenTX is the powerhouse firmware that revolutionized radio-controlled (RC) transmitters. While newer versions exist, , released on September 15, 2016, remains a critical, stable milestone in the 2.1 branch. It is particularly significant for users of older radios such as the FrSky Taranis X9D, X9E, and various Turnigy 9X/9XR models, offering a mature feature set that many still prefer for its reliability.
Install the . This dependency is required for the standalone simulator. OpenTX 2
Launch the application on your computer.
OpenTX 2.1 introduced a completely redesigned telemetry system that allows for automatic sensor discovery and custom calculated fields. Version 2.1.9 perfected this system before version 2.2 introduced sweeping changes.
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. For many users, 2
Before flashing anything, back up your existing models and firmware.
Warning: Always remember to back up your existing EEPROM (model settings) and current firmware before flashing a new version to your transmitter. Moving Forward
Before making any changes, always back up your existing radio data. Open .
Here's a step-by-step guide to get OpenTX 2.1.9 up and running: