I think I found another firmware bug: When I’m subscribing to UART by FCM service and moving to DATA mode (at+wasr=1 , at+w32k=1 done before) -> Any DTR activity are ignored (module are not moving to power down mode)… And if I’ll change DATA to AT mode -> All works fine… Does anybody faced the same problem?
…PS: Tested on Wavecom Supreme 20 with 6.63 firmware and OpenAT 4.21.