The $NWQMISTATUS command sometimes replies an ERROR shortly after
calling the $NWQMICONNECT command, but then replies the proper QMI
status if we retry it. This behavior is observed on an E362 modem with
4.08 firmware.
(ttyUSB0): --> 'AT$NWQMICONNECT=,,,,,,"",,,"",""<CR>'
(ttyUSB0): <-- '<CR><LF>OK<CR><LF>'
(ttyUSB0): --> 'AT$NWQMISTATUS<CR>'
(ttyUSB0): <-- '<CR><LF>ERROR<CR><LF>'
Got failure code 100: Unknown error
QMI connection status failed: Unknown error