alccrl

PS: Report refers to WIndows 11. On Linux Ubuntu 23.04 it (just tested) connects and st-link flashes Ok. Alfredo

I used also zadig, but it did not work. May be I installed an incorrect driver from the available list. Much probably cygwin installation (for arducopter sitl compilation) broke preexisting...

Thanks for Your explanation. I wired my FC such a way to power as much as possible through the underlaying pdb, but gps is wired to fc and is not...

Addendum: I mean I copied yaapu script model file, not EdgeTx model file : in SDCARD/MODELS/yaapu/ I copied MODEL_A.cfg into MODEL_B.cfg. This operation is not made automatically by creating MODEL_B...

Your suggested link explains how to configure ELRS on Yaapu from scratch. Problems arise when You copy or create another (elrs) model on transmitter. Moreover ..., I did not succeded...