Firmware runs on a built-in 8051 MCU of DM5680 which is the Baseband chip of VTX.

It works on all VTXs, including VTX Whoop, VTX Whoop Lite, VTX Race V1, VTX Race V2, VTX Freestyle.

To download the latest firmware for your VTX, visit the release page and click the asset that matches your hardware.

• Recommended build environment is Visual Studio Code
• Install PlatformIO IDE extension in Visual Studio Code
• Build source inside of PlatformIO (ctrl + alt + b)

• Navigate to .pio\build\{vtx model}
• Copy HDZERO_TX.bin to root of VRX SD Card
• Follow normal flashing proceedure

Please do not arbitrarily modify the data in use in the EEPROM, that may make your VTX not work.

For troubleshooting the VTX, refer to vtx troubleshooting and vtx manual in the VTX documentation.