nRF91x1 DK

To update the modem firmware, application firmware, or NTN firmware, complete the following steps:

1. Open the Programmer app.
2. Connect the DK to the computer with a USB cable, and then turn the DK on.

3. Click SELECT DEVICE and select the DK from the drop-down list.
   

   

   The drop-down text changes to the type of the selected device, with its SEGGER ID below the name. The Device memory layout section also changes its name to the device name, and indicates that the device is connected. If the Auto read memory option is selected in the J-LINK SETTINGS section of the side panel, the memory layout will update. If it is not selected and you wish to see the memory layout, click Read in the DEVICE section of the side panel.

4. Click Add file in the FILE section, and select Browse.

5. Navigate to where you extracted the firmware.
6. Check the CONTENTS.txt file in the extracted archive for information on which file you need.
7. Select the file to program and click Open.

8. Write the firmware to the device. Depending on the firmware type:

   a. Click Write in the DEVICE section of the side panel.

   

   The Modem DFU window appears.
   

   

   b. Click the Write button in the Modem DFU window to update the firmware. Do not unplug or turn off the device during this process.

   When the update is complete, you see a success message.

   Note

   If you experience problems updating the modem firmware, click Erase all in the DEVICE section of the side panel and try updating again.

   Click the Erase & write button in the DEVICE section to program the DK. Do not unplug or turn off the DK during this process.