nRF54L15 with MCUBoot

RE: nRF54L15 with MCUBoot

SimonV — Tue, 09 Dec 2025 14:00:15 GMT

After trying 3.2.0-rc2 it seems to have been fixed. However when provisioning the key i had to use west ncs-provision upload -k key.pem --keyname BL_PUBKEY as the defalut keyname seems to be wrong and my device thought that no key was provisioned.

RE: nRF54L15 with MCUBoot

Hung Bui — Mon, 24 Nov 2025 13:30:08 GMT

Hi Simon,
These 2 PR are related:
https://github.com/nrfconnect/sdk-nrf/pull/25655

https://github.com/nrfconnect/sdk-mcuboot/pull/576
They are under review.

RE: nRF54L15 with MCUBoot

SimonV — Mon, 24 Nov 2025 13:08:57 GMT

Has there been any update on this I am facing a similar issue?

RE: nRF54L15 with MCUBoot

Hung Bui — Wed, 03 Sep 2025 13:14:52 GMT

Hi James,
That error comes from the issue that FPROTECT couldn't protect the MCUBoot partition for some reason.
We are looking into this.

For now you can test using the none ns board.

If you don't plan to use any TFM feature I don't see why you need to use the ns board. Note that ns stand for non secure. It's separated so that you can protect the secure part.

RE: nRF54L15 with MCUBoot

jeos — Wed, 03 Sep 2025 06:23:08 GMT

Hi Hung,

I get the following output when I build/run for nrf54l15dk/nrf54l15/cpuapp/ns:

*** Booting MCUboot v2.1.0-dev-2b69d93e75bc ***
*** Using nRF Connect SDK v3.1.0-6c6e5b32496e ***
*** Using Zephyr OS v4.1.99-1612683d4010 ***
E: Protect mcuboot flash failed, cancel startup.

RE: nRF54L15 with MCUBoot

Hung Bui — Mon, 01 Sep 2025 14:32:24 GMT

Hi James,

Please give more info about the issue when you build for nrf54l15dk/nrf54l15/cpuapp/ns