Recommended modem firmware upgrade path

RE: Recommended modem firmware upgrade path

Hakon — Tue, 01 Jul 2025 08:38:24 GMT

[quote user="alexdubois@unikey.com"]My question boils down to: if I do not use a two-stage update, and instead use a single update to attempt upgrading from NCS2.6.1+MFW2.0.1 to NCS3.0.1+MFW2.0.2, and the modem upgrade to 2.0.2 succeeds but the application upgrade to 3.0.1 fails, will the existing NCS 2.6.1 application be able to use the new modem firmware reliably enough to attempt downloading and retrying the update again?[/quote]

Most probably yes. I can't guarantee that it will work though, but in my experience it will usually be fine. But if you want to be super safe, you can go with your first approach of two-stage update.

RE: Recommended modem firmware upgrade path

dubois — Fri, 27 Jun 2025 13:50:50 GMT

Hi Hakon,

I understand that NCS 3.0.1 is compatible with MFW 2.0.2 (I saw this on the chart that's linked in the question).

My question boils down to: if I do not use a two-stage update, and instead use a single update to attempt upgrading from NCS2.6.1+MFW2.0.1 to NCS3.0.1+MFW2.0.2, and the modem upgrade to 2.0.2 succeeds but the application upgrade to 3.0.1 fails, will the existing NCS 2.6.1 application be able to use the new modem firmware reliably enough to attempt downloading and retrying the update again? I.e., the chart says that NCS 2.6.0 is incompatible with MFW 2.0.2.

RE: Recommended modem firmware upgrade path

Hakon — Fri, 27 Jun 2025 11:14:36 GMT

Hello,

[quote user=""]Is this procedure necessary, or is it safe to go directly to an application built against NCS 3.0.1, i.e., potentially leaving the device in a state where the modem firmware is 2.0.2 and the application uses NCS 2.6.1?[/quote]

If you run the quick start app it will flash mfw 2.0.2 and NCS v3.0.0 together.

So I doubt that using NCS v3.0.1 with mfw 2.0.2 will be problematic at all. Do you have access to any debug interface so you can erase and flash your board?