This page has a list of common problems and solutions realated to the nRF9160 Feather.

Programming problems

Problem found: the nRF9160 Feather does nothing after being programmed/flashed.

Solution: after being programmed using west flash, you may have to issue an additional nrfjprog -r or hit the RST button on the board. This should start code execution.

GPS Connection issues

Problem found: unable to get a fix after waiting a long time. (Using the gps example.

Potential solution:* If your nRF9160 Feather is plugged into USB, try a different USB power supply. During the testing of the nRF9160 Feather, I found that certain USB C-to-A adapters injected were not properly grounded. This lead to issues getting a fix or prevented it all together. This especially applied to Apple Macbooks.

"The toolchain is unable to build a dummy C file"

If you're trying to build an example and you're getting an error building your code your should delete the Cmake cache:

rm -rf ~/Library/Caches/zephyr

More info here:

Also a post on the forum: