So… no soldering required: https://youtu.be/O5GYh470m5k
git clone https://github.com/ct-Open-Source/tuya-convert cd tuya-convert ./install_prereq.sh
And you can find other information here:
https://github.com/ct-Open-Source/tuya-convert/blob/master/README.md
Also support with Reddit:
https://www.reddit.com/r/homeassistant/comments/akea2n/flash_your_tuyasmartlife_switches_over_the_air_no/