NRF9160DK problems downloading firmware

RE: NRF9160DK problems downloading firmware

Jace — Thu, 05 Sep 2019 21:40:52 GMT

my problem was resolved by erasing all flash first.

nrfjprog --eraseall -f nrf91

then:

nrfjprog --program merged.hex --sectorerase -r -f nrf91 --verify

Thanks for the help!

RE: NRF9160DK problems downloading firmware

Jace — Thu, 05 Sep 2019 21:31:09 GMT

Thank you for the quick reply. I've had success flashing using both west and nrjprog.

The issue now is the device appears to be in a bad state after flashing with those methods. The device appears to be continually rebooting. In the LTE Link Monitor I'm seeing this output:

SPM: NS image at 0xc000

SPM: NS MSP at 0x2002ad60

SPM: NS reset vector at 0x13db5

SPM: prepare to jump to Non-Secure image.

***** Booting Zephyr OS v1.14.99-ncs2 *****


then it shows Flash region and repeats.

It also says:

Non-secure callable region 0 placed in flash region 0 with size 32.

So I'm wondering if maybe I've overwritten an important part of flash. On a successful SES download, the device appears to be repaired.

RE: NRF9160DK problems downloading firmware

E3V3A — Thu, 05 Sep 2019 20:57:58 GMT

You can always try to flash the HEX with nRF Connect - Programmer.

OR using west
OR using CMake
OR using Ninja

OR just try this:

cd ${NORDICS}/ncs/nrf/applications/asset_tracker/build_nrf9160_pca10090ns/zephyr/merged.hex
nrfjprog.exe --program merged.hex --sectorerase -r -f nrf91 --verify