Asset tracker restarting without error then sending messages to cloud in duplicate

[rkguy]

.y device keeps restarting multiple times without any warning which causes messages to be delivered multiple times to nrfcloud. I've had 5 messages delivered simultaneously, with each one being identical. This happened with the official release and with latest master. I can see the whole boot sequence occuring in the terminal. Why is this happening? 

[Martin Lesund]

Hi ip,

1. Please try to flash this application, and see if you still get the Error: 

asset_tracker.hex

using the command line: nrfjprog --program asset_tracker.hex -f nrf91 --sectorerase -r --verify

2. It may be that you have stumbled upon an errata:

Please check this link for more information.

3. Or this may be a bug in the modem firmware which a new version will come very soon that may fix this.

[rkguy]

Thank you. I think 2 probably was an issue but I am still getting restarts. Here is the output

***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
NRF_CLOUD_EVT_TRANSPORT_CONNECTED
NRF_CLOUD_EVT_USER_ASSOCIATED
NRF_CLOUD_EVT_READY
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
GPS device found
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...
NRF_CLOUD_EVT_TRANSPORT_CONNECTED
NRF_CLOUD_EVT_USER_ASSOCIATED
NRF_CLOUD_EVT_READY
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
NRF_CLOUD_EVT_SENSOR_ATTACHED
GPS device found
***** Booting Zephyr OS v1.13.99-ncs1-xxxx-xxxxxxxx *****
Application started
LTE LC config ...

[rkguy]

In addition, it takes about 20-60 seconds to restart Martin Lesund and Markus Tacker (he/him)

[Martin Lesund]

There will come a new modem firmware version in the very near future that should fix that issue.
Please keep an eye on: https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF9160-DK/Download#infotabs

[rkguy]

The old version is 0.6.8-30, correct?

[rkguy]

By very near do you mean a few days because I keep checking and nothing is updated

[rkguy]

modem firmware 0.6.8-131-alpha corrected the issue