HappyModel ES900 Expresslrs upgrade

Upgrade ES900RX

 Goto https://www.expresslrs.org for latest info. And also GitHub expresslrs

Download latest Expresslrs configurator. 

 

Press Build

After that bin file should be shown like this

Power on RX. Wait like 1 minute. New WIFI with SSID ExpressLRS RX should be there. Connect to it. Open browser http://10.0.0.1 and load this bin file. Wait till it is reset. Done

Upgrade ES900TX

Upgrading using WIFI does not work from stock Happymodel firmware.

* Remove module from TX16S JR bay.

* Open it - 4 screws.

* PINS are configured like 1,2,3,4 OFF 5, 6 ON

Oscar Liang says something different maybe: https://oscarliang.com/setup-expresslrs-2-4ghz/#flash-tx-firmware-via-wifi

Happymodel TX module, it requires an extra step for UART flashing to work. On the TX module board, there are 6 jumpers, by the default the middle two are bridged. When flashing via USB/UART, you should move the jumpers down to the bottom two pins.

* install driver CP210X if not already 

* Connect USB to FT232 UART

* Press Build and Flash

Done