If a previous test is in progress when Direct Test Mode is Opened in nRF Connect for Desktop v5.0.0 and the device is connected via serial with preinstalled DTM firmware, the initial Start Test sequence fails to set channel. It could be fixed by insuring that on any Test Start action that the command to Stop Test is first sent to allow the channel to be assigned properly otherwise you must Start Test (previous channel remains selected) then Stop Test and then Start Test again to get the channel to change.
If a previous test is in progress when Direct Test Mode is Opened in nRF Connect for Desktop v5.0.0 and the device is connected via serial with preinstalled DTM firmware, the initial Start Test sequence fails to set channel. It could be fixed by insuring that on any Test Start action that the command to Stop Test is first sent to allow the channel to be assigned properly otherwise you must Start Test (previous channel remains selected) then Stop Test and then Start Test again to get the channel to change.