[qmi-firmware-update] Flashing does not work properly with Sierra em9191 (5g modem)

[Aleksander Morgado]

Hey,

> After the fix I have following issue:
>
> 1.26.10 qmi-firmware-update:
> qmi-firmware-update -w /dev/cdc-wdm2 --update adydychk/fws/atta/SWIX55C_01.07.13.00-005.cwe  adydychk/fws/atta/SWIX55C_01.07.13.00_ATT_012.007_002.nvu
> loading device information before the update...
> setting firmware preference:
>   firmware version: '01.07.13.00'
>   config version:   '012.007_002'
>   carrier:          'ATT'
> rebooting in download mode...
> download mode detected
> error: unsupported download protocol
>
> After that the modem is not active. I suppose that only full power off will help me. I think that this version simply does not have support for this modem. Right?
>

Yes, that version doesn't have support for the EM9191, the only libqmi
version you can use is git main branch.

> 1.31.2 qmi-firmware-update (version based on "build-collection-basic" CI cmd):
> ./qmi-firmware-update -w /dev/cdc-wdm3 --update /home/support/adydychk/fws/atta/SWIX55C_01.07.13.00-005.cwe  /home/support/adydychk/fws/atta/SWIX55C_01.07.13.00_ATT_012.007_002.nvu
> loading device information before the update...
> error: couldn't open QMI device: endpoint hangup
>
> Any thoughts?
>

Weird, that looks like a device reboot or the qmi-proxy crashing
behind the scene.
Have you stopped ModemManager before attempting this operation?
Can you retry with --verbose to see if we get some additional info on the issue?

-- 
Aleksander
https://aleksander.es