The update process depends on your hardware version. Newer versions (V3.0 and up) typically feature a built-in USB port, making the process much simpler than older versions that required an FTDI adapter.
At its core, the True-D firmware manages the "diversity" algorithm, which switches between two antennas to provide the clearest possible video signal. furious fpv true-d firmware
provides a complete overview of features and calibration requirements. Legacy Hardware (V1/V2) Update Paper : For users with older modules, Oscar Liang's guide The update process depends on your hardware version
This procedure requires opening the module and voiding the warranty. Go slow. provides a complete overview of features and calibration
: Represents a hardware and firmware shift. These versions include an integrated OSD menu (allowing channel selection without removing goggles), a built-in lap timer, and a "Find Mode" for lost drones. Updating Firmware by Hardware Version