[Quectel EM160R-GL] Various commands over mbim fail with 'Invalid transition'

[Aleksander Morgado]

On Tue, Jun 13, 2023 at 1:43 AM Alex Ballmer <alexb at meshplusplus.com> wrote:
>
> 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