Modem Firmware upate on Thingy:91

[cwbrandsdal]

Hi!

I just got the Thingy:91 to play around with, but the modem firmware is old. Is it possible to update the modem firmware using USB and the Programmer software? The "Update modem" button is grayed out, and I'm not sure what to do next. Do I need the DK with the programmer chip for this?

Thanks,

Christopher
Norway

[Didrik Rokhaug]

Hi.

You can update the modem via nRF Cloud.

However, the Thingy:91 does only support modem DFU within the same minor version. You can, therefore, not update from mfw1.0.0 to v1.1.0.

For this, you will need an external programmer, such as the one found on the DK.

Best regards,

Didrik

[cwbrandsdal]

Ah ok. Thanks! I'm trying to get a NB-IoT card to work on it now, but it does not. The modem firmware is mfw_nrf9160_1.0.1. I have not read too much about this yet, but it looks like the modem firmware is split between NB-IoT and LTE-M. Does this mean I need to update the modem firmware to get nb-iot to work? If so, I need DigiKey to send me the DK, hehe. :-)

[Didrik Rokhaug]

No, the modem firmware supports both NB-IoT and LTE-M.

However, it only supports one at the time. You can select which one is supported with the %XSYSTEMMODE AT command.

As you are on mfw v1.0.1, you will not be able to upgrade to v1.1.0 without external hardware. But, you will be able to upgrade to future 1.0.x versions.

[cwbrandsdal]

Ah great! Thank you so much.