Huawei E392 firmware crash caused by MM issuing "AT*CNTI=2"

[Dan Williams]

On Mon, 2013-11-18 at 22:44 +0100, Thomas Schäfer wrote:
> Am Montag, 18. November 2013, 11:21:05 schrieb Dan Williams:
> > On Mon, 2013-11-18 at 09:55 +0100, Bjørn Mork wrote:
> 
> > > And sure enough: Trying "AT*CNTI=2" (after enabling the SIM with
> > > AT+CPIN=....) in minicom makes the firmware crash, every time.
> > > 
> 
> I did not try the pre condition at+cpin, because I work with disabled PIN
> 
> > 
> > My E397 and E392 *do* implement CNTI=2 and do not crash, but they fail
> > to report LTE capabilities in the command.  
> 
> I can confirm this for the E398.
> 
> At other devices I get only "error" and "command not support", but no crash.

For the record, my E392u-92 is running firmware 11.836.13.00.76.  But
anyway, if CNTI=2 crashes some Huawei devices, and those Huawei devices
that don't crash lie in their CNTI=2 response like mine and Thomas' do,
then we should just skip CNTI=2 for Huawei in general.

Dan