Disappearance of flashed certificates

RE: Disappearance of flashed certificates

Øyvind — Tue, 12 May 2020 12:51:02 GMT

Tjaž,

I've been trying to figure out what causes this but can't find a good answer.

How long does the device run before it stops?

[quote user="Tjaz"]then our code is flashed (a modified cat tracker[/quote]

What have you modified in this application?

Thanks,

Øyvind

RE: Disappearance of flashed certificates

Tjaz — Tue, 12 May 2020 12:13:23 GMT

Those devices have modem firmware version 1.1.1.
nRF Connect SDK version is also 1.1.

Regards,
Tjaž

RE: Disappearance of flashed certificates

Øyvind — Mon, 11 May 2020 09:15:02 GMT

Hi Tjaž,

There aren't any issues related to HW that we are aware of, but I may be wrong. Usually, this is due to the wrong use of modem key management or similar.

What version of NCS have you built your modified cat tracker on? And what modem FW version are you running?

Thanks,

Øyvind

RE: Disappearance of flashed certificates

Tjaz — Mon, 11 May 2020 07:52:32 GMT

Hello,

no, we have no calls to Modem key management. The certificates are flashed using the AT command client and LTE Link Monitor, then our code is flashed (a modified cat tracker).

The code I posted in my original post in only meant to show that the certificates have disappeared from the device. I would think that this can happen as a result of some hardware related fault?

Regards,
Tjaž

RE: Disappearance of flashed certificates

Øyvind — Fri, 08 May 2020 09:47:16 GMT

Hello Tjaž,

Can you elaborate on what your code does? Do you have any calls to e.g. Modem Key Management?

Kind regards,
Øyvind