> >> After upgrading an EM160R-GL modem via QFireHose from firmware version > >> EM160RGLAUR02A07M4G to version EM160RGLAUR02A07M4G, almost all functions > >> fail with ‘Invalid transition’. The modem power state is listed as "power > >> state: low” via mmcli. On the former firmware version everything was > >> working fine. > >> > >> This is currently happening with modemmanager 1.18.8 using mbim via the > >> qmi_wwan driver on openwrt with linux 4.4.60 and libmbim 1.28.4 > >> > >> I tried manually enabling it (in case it was FCC locked) via mbimcli > >> --device-open-proxy --device="/dev/cdc-wdm0" --quectel-set-radio-state=on, > >> but this also had no effect. > >> > >> What additional steps would I need to take to debug this? > > > > Very likely that they may have changed the FCC unlock algorithm in the > > newer firmware version :/ > > > > -- > > Aleksander > > > The same firmware version has worked on other modems of the same model. This > appears to be a problem with a specific batch of modems(?). Is this something > that is likely to occur? > > Also in my testing the modem is not FCC locked, its stuck in factory-test > mode, as verified by AT+QRFTESTMODE?. Attempting to leave factory-test mode > with AT+QRFTESTMODE=0 doesn’t seem to have any effect
Ah, that could also be it, yes. Maybe ask for help in the Quectel forum, they may know what happened or how to solve it. -- Aleksander
