EM7455 upgrade states success but does not work

[Sai Chaitanya]

Did you try AUTO-SIM? You may need to unlock protected commands first I
think, with at!entercnd, before trying to set image preference.

AT!IMPREF=”AUTO-SIM”

Thanks and regards
Sai.

On Tue, Jun 6, 2023 at 5:52 PM Paul Gildea <gildeap at tcd.ie> wrote:

> Hi,
>
> I'm trying to upgrade an EM7455 to the latest Verizon firmware. The libqmi
> firmware updater returns that it is a success, but when the modem reboots
> it is booting into ATT, so the modem comes up in low-power and is unusable.
>
> Subsequent upgrades yield the same result. Switching carriers and
> switching back to Verizon also does the same, other carrier images work
> fine. I don't have physical access to the modem so can't take it out to
> reflash it. Any idea of how I can solve this?
>
>
> at!impref?
> !IMPREF:
>
> preferred fw version: 02.33.03.00
> preferred carrier name: VERIZON
> preferred config name: VERIZON 002.079_002
> preferred subpri index: 000
> current fw version: 02.32.11.00
>
> current carrier name: ATT
> current config name: ATT_002.070_002
> current subpri index: 001
>
> fw version mismatch
> carrier name mismatch
> config name mismatch
>
> Thanks,
> --
> Paul
>


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