qmi-firmware-update on em7455 : error: unsupported download protocol

[Ken Harris]

Hi.  Let me know if there's a better place to ask this question.

I'm trying to get a Dell branded em7455 working on Fedora 34.  I'm
using "Google Fi". FYI an em7355 works well.

"mmcli --modem 1" says :

  Status   |       unlock retries: sim-pin2 (10)
           |                state: enabling
           |          power state: low
           |       signal quality: 0% (cached)


FYI, I did "at!RMARESET=1" yesterday and I thought it worked after
that, but now it's not working.


I thought maybe it's the firmware ( SWI9X30C_02.08.02.00 ), so I tried
to update it :

I stopped and disabled ModemManager.  I set :

at!usbcomp=1,1,10d

... and ran update :

qmi-firmware-update --update -d 413c SWI9X30C_02.33.03.00.cwe
SWI9X30C_02.33.03.00_GENERIC_002.072_000.nvu

loading device information before the update...
setting firmware preference:
  firmware version: '02.33.03.00'
  config version:   '002.072_000'
  carrier:          'GENERIC'
rebooting in download mode...
download mode detected
error: unsupported download protocol

FYI, I also tried fdt2 on windoze :

fdt2.exe -d g5k -ignswto -f SWI9X30C_02.33.03.00.cwe
SWI9X30C_02.33.03.00_GENERIC_002.072_000.nvu

FDT version: 1.0.1806.0
Awaiting adapter ...
Setting images preference ...
Resetting ...
Awaiting download port ...
Enabling selective suspend ...
Firmware download failed.
Primary error code: 82 - Failed in checking modem mode.
Secondary error code: 5 - Neither NDIS adapter nor serial port is available.
Device error code: 0x0 - Unknown device error code.

Preexisting images information:
        Current:
                Firmware:
                        ImageId: 002.007_000
                        BuildId: 02.08.02.00_GENERIC
                Configuration:
                        ImageId: 002.007_000
                        BuildId: 02.08.02.00_GENERIC
Final images information:
        Current:
                Firmware:
                        ImageId:
                        BuildId:
                Configuration:
                        ImageId:
                        BuildId:

OEM PRI:

IMEI:

Total time elapsed: 44313 ms.

Time to switch to boot mode: -1 ms.

Images downloaded:

Press Enter to continue ...



... any tips to make this work ?

Thanks,
Ken