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nRF9160 modem firmware update without SWD

Hi,

Is it possible to update the modem firmware once the product is on the field? I'm not talking about the application hosted on the M33, but the actual modem firmware.

We won't be able to use SWD on the field, but we still would like to get all new functionnalities coming with all the updates.

What should be the strategy to update the modem firmware? Is there already an api for it? Do I need a specific nRF9160 routing to allow firmware update?

In our architecture, the nrf9160 is connected by UART to a nrf52840. Can I flash the new firmware using the nrf52?

Best regards

Giuliano 

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