EM7565 driver/firmware issue

IoT Modules MC/EM Series
44

Thank you. I am trying to update generic image R21.1: https://source.sierrawireless.com/-/media/support_downloads/airprime/75xx/fw/7511_rev21,-d-,1/9999999_9907259_swi9x50c_01,-d-,14,-d-,22,-d-,00_00_generic_002,-d-,057_000.ashx

But I am getting the following error:

FDT version: 1.0.1902.1
Awaiting adapter ...
Enabling selective suspend ...
Firmware download failed.
Primary error code: 14 - No MBN adapter available.
Secondary error code: 0 - Not applicable.
Device error code: 0x0 - Unknown device error code.

Preexisting images information:
        Current:
                Firmware:
                        ImageId:
                        BuildId:
                Configuration:
                        ImageId:
                        BuildId:
Final images information:
        Current:
                Firmware:
                        ImageId:
                        BuildId:
                Configuration:
                        ImageId:
                        BuildId:

OEM PRI:
IMEI:
Total time elapsed: 125 ms.
Images downloaded:
Press Enter to continue ...

Any suggestion? I can send AT commands (using for instance PUTTY tool) so modem is there…