Update echoUAT Transceiver Software

 Download the appropriate transceiver software for echoUAT echoUAT Transceiver software version:2.4.66 Released 4/1/2024 FOR USE WITH THE echoALT OR OTHER APPROVED ALTITUDE ENCODERS ONLY! echoUAT Transceiver software version:2.4.43 Released 4/9/2019 Fixes to optimize performance in high traffic enviroments 2.4.15 Released 1/22/2018 Properly displays invalid baro altitude as "--" instead of zero in the mobile [...]