MC7750 libqmi

Tim Harvey tharvey at
Tue Nov 5 11:10:03 PST 2013

On Tue, Nov 5, 2013 at 1:04 AM, Bjørn Mork <bjorn at> wrote:
> Tim Harvey <tharvey at> writes:
> >> First, what firmware version?
> >>
> >> qmicli -d /dev/cdc-wdm0 --dms-get-revision
> >
> > Revision: 'SWI9600M_01.00.09.03AP R2492 CARMD-EN-10526 2011/07/01 19:31:09'
> >
> > I questioned if this was indeed the cmd to get the firmware revision
> > as the above looks very old.
> That is the firmware revision, and it *is* very old.
> >  I believe the latest is Sept 11
> > 2013.  I'll have to dig into the docs to figure out how to update it
> > (I believe I have to use a windows host and app)
> Sierra do support updating on Linux using their Linux SDK, but only if
> you use the drivers coming with that SDK [1], and only if the device is
> in the mode expected by the update utility.  The SDK is usually
> delivered with some binary-only components.  I am not sure if your
> OpenWRT platform is supported.  You should check this with your Sierra
> support contact.
> I would have moved the card temporarily to a Windows box to do the
> update, if that is an option. If not, then I think I'd stick with the
> current revision unless there are really good reasons not to...

agreed - it seems updating firmware via windows is typically much
easier.  In this case however, I can't seem to locate windows drivers
that support the MC7750.  The 'one-touch' windows firmware update
utility fails to identify the card which is no surprise as the device
nodes in windows device manager all have exclamation points next to
them.  Anyone know where to download Windows7 drivers for MC7750 so
that I can get this firmware updated?



> [1] in theory it is possible to use the SDK update utility on top of
>     qcserial + qmi_wwan if you create a SDK API compatibility layer
>     using CUSE. But you'd still face the binary-only SDK library
>     problem, so it won't help much unless the platform already is
>     supported by the SDK
> Bjørn

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