My nrf9160 which has the v1.0.0 modem and using v1.0.0 sdk has suddenly started continuouly resetting .

[Julia]

My nrf9160 which has the v1.0.0 modem and using v1.0.0 sdk has suddenly started continuouly resetting when i try to run asset tracker application.  I have tried at-command sample also and that gives an assertion Fail with bsdlib irrecoverable error: 3. I seem unable to program it with anything that works. I have programmed with programmer tool and from the command line using west. Any sugestions?

[Håkon Alseth]

Hi,

 

We recently had a corner-case issue in nrfjprog v10.1.1 with nRF9160, where it did not properly run "--sectorerase", thus you needed to do a "nrfjprog -e" first.

What version of nrfjprog are you using?

 

Kind regards,

Håkon

[Julia]

nRfConnect v3.0.0

[Gabe]

It seems to happen to devices after I've programmed them a few times. Is there a way to completely clear out all the flash and reprogram from scratch? Any way to save any of the boards we've gotten into this state?

[Simon]

The problem might be caused by the newest nrfjprog (10.2.1), since it is resetting twice. If the IC is reset while the modem FS is being updated, an FS corruption might happen.

However, we are not sure if this is the problem, and are trying to get to the bottom of it.

Best regards,

Simon

[Gabe]

Has there been any movement, we are at a complete standstill until we can recover our existing boards. We have another order coming in but can't risk programming until we have a solution. Is there a process we can follow to be certain we do not see this issue?

Thank you,

Gabe

[Andrea]

Simon,

I've the same problem reported in this ticket.

When will a solution be available?

We desperately need a work around as soon as possible as this is impacting our work plan.

How can we factory reset the FS?

[Bjørn Kvaale]

A new modem FW update should fix this issue. Please speak to your respective Regional Sales Managers to get an update on when that will be released. Once the modem DFU is done, you will most likely need to get new certificates. You may get a 111 error. If you do, you can follow this link. Just remember to not delete your devices from nRF Cloud. If that link does not work, create a new private devzone ticket explaining the issue & please provide the IMEI code of the malfunctioning nRF91 device.

[Gabe]

Bjorn,

Can you elaborate on the root cause of the issue? What is a work around in the meantime? We are not using NRF cloud for our deployment and are using our own aws certificates directly. Is this purely a certificate issue? We are in production for 1k units with 2k unit production starting in 2 weeks. We don't seem to see the issue with the alpha modem firmware.

Thanks,

Gabe

[Bjørn Kvaale]

Hi Gabe, I believe you have received a status update on this from your local RSM. Please let me know if this is not the case.