Huawei modem (12d1:1573) resets with AT^GETPORTMODE

Ben Chan benchan at
Mon Mar 3 10:31:48 PST 2014

> Ben, Franko, have you guys seen a Huawei device crashing/rebooting like
> this when AT^GETPORTMODE is sent to it?
I haven't seen this issue on the Huawei modems that I tested before. It
could be a firmware issue but I don't have a MU609 module to verify.

I'm a bit surprised that MU609 shares the same PID as ME906. If we want to
work around the issue in ModemManager, we certainly need more than PID to
distinguish between ME906 and MU609. I tested my ME906 and it didn't
exhibit this issue.
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