Firmware upgrade for em7345 on Lenovo laptops

[Aleksander Morgado]

Hey

>
> the modem firmware on the Sierra Wireless em7345 seems to have some
> issues. We've had recent reports from the Netherlands and some parts of
> Germany (depending on the provider) that the modems stopped working.
>
> Based on kernel and modemanager logs the modem disappears from the usb
> bus and reappears with a strange product/vendor id ("1 cdc") just after
> a successful connect. ModemManger obviously fails to redetect the modem
> after that (it's ok after a reboot). The Lenovo forums have reports of
> this happening with Windows, too.
>

Got a link?

> Upgrading the modem to the latest Lenovo provided firmware version
> (using Windows) seems to fix those issues.
>
> Now my question is, could this upgrade be done using the upgrade utility
> provided with libqmi (using the qmi over mbim method)? Has anyone
> experiences with this? And how to get the firmware in a format that the
> upgrade tool can cope with, is there a way to extract it from the lenovo
> files or are there other sources for firmware images known to work with
> this modem model as build into Lenovo laptops?
>

No, this module is an Intel-based Sierra module, there's no QMI
support there I'm afraid.

-- 
Aleksander
https://aleksander.es