FM350-GL (installed in ThinkPad P1 Gen 5)

Bjørn Mork bjorn at
Tue Oct 11 13:39:30 UTC 2022

Thilo-Alexander Ginkel <thilo at> writes:

> Hi there,
> as Lenovo couldn't fix my ThinkPad X1E4 (featuring an SDX55) I got a P1G5
> as a replacement, that, however, comes with a FM350-GL as WWAN modem. I
> guess we need to play the FCC unlock game again (as it does not work out of
> the box), but first wanted to ask if anyone has any experience with this
> kind of modem under Linux and their FCC unlock procedure.

No experience unfortunately.  But looking at strings in
I see stuff like

%s cancel...
%s: MBIM interface is not available, retry: %d
%s: Reach the max retry times
%s: QueryCommand FAILED
%s: Get challenge value from Modem FAILED!
%s: Send finial hash value to Modem FAILED!
DO result: %d
%s: No need
%s: ulResponseLength is INVILED
%s: QueryCommand FAILED hr: 0x%X

I guess you know the way from there :-)


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