This sample can be used to load new modem firmware to your device using the bootloader only. This is useful if you do not have a programmer!
Make sure you have the VSCode plugin installed and running. Here are the instructions for each major architecture:
Get your modem firmware of choice by nagivating to the nRF9160 Download page and scrolling to the nRF9160 SiP modem firmware section:
Download the version you'd like to use.
IMPORTANT: currently nRF9160 Feather is shipped with version 1.2.3 of the modem firmware. If you upgrade > v1.3.0 you cannot downgrade according to Nordic.
Build the sample located in
Then load to your device:
First you need to install the dependencies by running the following within
pip3 install -r requirements.txt
python installed you should be able to run the corresponding
update_modem.py script easily:
python3 update_modem.py mfw_nrf9160_1.3.0.zip /dev/tty.SLAB_USBtoUART 1000000
update_modem.py is located in NFED under the
Here's what it should look like at the end of the process.
You can confirm you have the version you loaded by running the
AT+CGMR AT Command using
The AT host sample started > AT+CGMR mfw_nrf9160_1.3.0 OK
Your modem firmware plays an important role in the nRF9160. The easiest way, as of this writing, to update is to use the Programmer's Update modem function. It's important to note that not all firmware is certified to work on every provider. For a full up-to-date list, check out Nordic's documentation.
Another note: you will need a programmer and Tag Connect cable in order to update the modem firmware.
Here are the instructions for updating your modem firmware:
- Download the modem firmware you need.
- Next, open up the Programmer in nRF Connect For Desktop. (You may need to open it first)
- Then open up a connection to your programmer. (Your programmer should be connected to USB and attached to your nRF9160 Feather)
- Once opened, the program will read the memory contents of your device and display it.
- To update the modem firmware, scroll down to the bottom right and click Update modem
- Find your modem firmware
- Start the DFU process by clicking Write!
Then, your device will be updated. This process takes about 45 seconds. You can check if the firmware version using the
AT+CGMR AT command. Devices running on Verizon must use modem firmware v1.1.2.