Upgrading the modem firmware of an nRF9160 DK

nrfutil device can be used to upgrade modem firmware on nRF9160 DKs. These devices are listed using the jlink and modem traits.

1. Identify the serial number of J-Link devices that support modem upgrades, by running the following:

   nrfutil device list --traits modem,jlink

   The nRF9160 DK should show up as a device with board version PCA10090.
2. To program, for example, the firmware mfw_nrf9160_1.3.3.zip, run the following:

   nrfutil device program --firmware mfw_nrf9160_1.3.3.zip --serial-number xxxxxxxxx