Registration rejected after SDK update

RE: Registration rejected after SDK update

Benjamin — Tue, 04 Nov 2025 08:45:23 GMT

That is great to hear!

RE: Registration rejected after SDK update

Bernhard — Mon, 03 Nov 2025 19:41:50 GMT

Hello Benjamin,

I have to apologize, I think it's actually kind of working.

It seem's like I just had bad reception which did not print error messages in older SDK versions, but the lte modules were changed a lot so the behaviour is now different, I think also the retry timeout is shorter now.

Under better conditions / on a different location it's actually working.

Thank you anyhow!

Best regards,
Bernhard

RE: Registration rejected after SDK update

Benjamin — Fri, 31 Oct 2025 11:19:43 GMT

Thanks,

Just to confirm, the GNSS sample works on your board in pre v2.7.0 versions?

RE: Registration rejected after SDK update

Bernhard — Wed, 29 Oct 2025 16:07:35 GMT

Hello Benjamin,

I tested with multiple SDK versions now and actually the problem is more connected to the update to HW model v2 than to the SDK update itself. All versions from (including) v2.70 are affected.

I made a modem-trace based on gnss sample (with my application I got memory overflows when trying to build with modem-trace):

devzone.nordicsemi.com/.../modemtraces.zip

I will try to test it also on a DK in the next few days.

Thank you!

Best regards,
Bernhard

RE: Registration rejected after SDK update

Benjamin — Wed, 29 Oct 2025 13:59:51 GMT

Thanks. Some more questions:

Do you see the same issue on a DK?
Are you using the same MFW with both the working and non-working NCS versions?
Have you tried any other NCS versions between 2.7.0 and 3.1.0?

It’s unusual if no other samples work either. Could you take a modem trace and upload it here? I’ll share it with the modem team for review.

Best regards,
Benjamin

RE: Registration rejected after SDK update

Bernhard — Wed, 29 Oct 2025 12:20:40 GMT

I just noticed that I did not answer the second part of your question.

I am using a Magenta SIM, did not pay too much attention to it as it is working with older SDKs.
Any special parameters I should check here?

RE: Registration rejected after SDK update

Bernhard — Wed, 29 Oct 2025 12:18:35 GMT

Hello Benjamin,

I have build the GNSS sample for my custom board with basically the same output Registration rejected

I am searching for the differences in the files but its hard to find anything, I have played a lot with the
CONFIG_MODEM_ANTENNA ...
settings, especially as they are also partly auto-configured for the boards, but always with the same output.

Any other ideas?
Thank you

Best regards,
Bernhard

RE: Registration rejected after SDK update

Benjamin — Mon, 27 Oct 2025 09:01:05 GMT

Hi Bernhard,

Do you experience the same issue if you build and flash a sample from v3.1.0?
What SIM are you using?

Best regards,
Benjamin