Firmware update of MC7455 timing out.

[Dan Williams]

On Thu, 2017-11-30 at 17:22 +0100, Christophe Ronco wrote:
> Hi Paul,
> 
> 
> On 11/30/2017 04:09 PM, Paul Gildea wrote:
> > 
> > 
> > I have done some more testing and now realised every MC7455 modem
> > I 
> > try to update is now stuck in "low-power" mode  and I can not get
> > it 
> > out of it. Although the mode should not be persistent over power
> > cycle 
> > it is. I will see are there any other AT commands I can try to get
> > out 
> > of that state.
> > 
> > I also got a different error a couple of the times I tried today:
> > 
> > loading device information before the update...
> > setting firmware preference:
> >   firmware version: '02.24.05.06'
> >   config version:   '002.034_000'
> >   carrier:          'VERIZON'
> > rebooting in download mode...
> > download mode detected
> > error: error creating device: unexpected response received in
> > dload 
> > sdp: 0x13
> > 
> 
> I had the same kind of error on a MC7304 modem. You can have an hint
> on 
> why you are in low-power mode using AT!pcinfo?
> 
> On my modems, I had:
> 
> AT!pcinfo?
> State: LowPowerMode
> LPM force flags - W_DISABLE:0, User:0, Temp:0, Volt:0, BIOS:0,
> GOBIIM:1
> W_DISABLE: 0
> Poweroff mode: 0
> LPM Persistent: 1
> 
> OK
> 
> In Sierra AT documentation I have, GOBIIM flag is not described.
> I didn't manage to have a usable answer from Sierra on:
>   - where this could come from
>   - how to fix it
> I just stopped upgrading MC7304 modems (I managed to upgrade MC7354
> and 
> MC7430).

The GOBIIM flag means the selected PRI and modem images are not
compatible.  You'd need to select a compatible pair and then the modem
should allow you to exit low power mode.

Dan