img_fota_dfu_hex/thingy91_nbiot_2021-03-04_8e8c6089.hex Asset tracker firmware for nRF9160, NB-IoT network mode
is the asset tracker firmware specifically constructed by Nordic for use with nRF Cloud (though they have builds for AWS and Azure) - as such it is not directly compatible with Telenor’s IoT Cloud; however we have a sample application you can use
to use this, you will need to have a build env for Zephyr/NCS; you can find instructions on that in the repo as well, though please be aware that if you are inexperienced in Zephyr/NCS there are some gotchas, and I strongly recommend using a venv when setting up.
the sample application in the repo above use CoAP instead of MQTT. It is possible to modify the Asset Tracker to work with IoT Cloud, however it is not trivial.