nRF93M1 DK offline firmware update

[Shinjo Park]

Hi, I just started evaluating the nRF93M1 DK (LABA version) and have questions about the firmware version.The AT+CGMR gives "mfw_nrf93m1_1.4.1", which seems to be a bit older than the latest one. According to the AT command manual there should be 1.5.x version.

Yes, I know that  nRF93M1 DK Fimrware Version exists, but the solution suggested there uses online OTA update. How can I perform an offline update without plugging in a SIM card?

[Hakon]

Hello,

I don't think it's possible to update modem firmware over serial. But I will ask internally and come back to you if I find out otherwise.

[Shinjo Park]

Thanks for quick reply. Our anticipated application uses a private cellular network without a connection to the public Internet, therefore an offline update without Internet connection is considered as a must. I saw that the feature is available in nRF9151.

[Hakon]

It seems that at the moment it is not possible to do serial DFU on the nrf93m1. But in the near future (couple days or weeks) it will be possible to do this from Quick Start. I will come back with more information soon.

[Shinjo Park]

Indeed, I tried upgrading via FOTA from 1.4.1 to 1.5.0, and now AT%FWUPD command works as expected. I think from now on I can also update offline.