okay guys, update :
big step for me, small step for mankind - i can access the ESC32 now by 4-wire connect via Silabs UART in 5 V mode, but only with QGC 1.3
Can see FW-version and parameters - but cant flash new firmware. The left windows where to select either AQ or ESC-FW etc. only allow speed up to 115 kBaud. Guess thats the problem why i get errormessages when trying to flash.
So, is it possible to set the ESC32-baudrate down to 115 k, store, re-connect with 115k in flash-window to update and restore ESC-baudrate back to 230 kBaud after all ?
Have not tested yet, guess its better to ask for it than producing new problems on my own...