Latest modem firmware breaks voice calls

[Subsentient]

Hi,
after installing the modem firmware from
https://forum.pine64.org/showthread.php?tid=11815

Trying to make a voice call results in an "Unknown error". ModemManager points ad "org.freedesktop.ModemManager1.Error.MobileEquipment.Unknown".

$ mmcli -m 0 --voice-create-call=number=MYNUMBERHERE 
Successfully created new call: /org/freedesktop/ModemManager1/Call/1
$ sudo qdbus --system org.freedesktop.ModemManager1 /org/freedesktop/ModemManager1/Call/1 org.freedesktop.ModemManager1.Call.Start
Error: org.freedesktop.ModemManager1.Error.MobileEquipment.Unknown
Unknown error

Any idea what went wrong here? Is there any other firmware build to try?

Hi, I suspect that, as expected, the update reset your modem's configuration settings.
Please carefully re-read this thread: https://forum.pine64.org/showthread.php?tid=11815

You may wish to try booting a more modern OS image with a 5.9 megi kernel, as it should set the relevant settings for you.