https://devzone.nordicsemi.com/f/nordic-q-a/127942/multi-image-lwm2m-fota-patchHello, I&#39;m building a multi-image project for an nRF9151: a two-stage bootloader (NSIB + MCUboot) plus two independent non-secure app images. Each app needs to be able to FOTA-update itself, the other app image, and the modem, served as three LwM2Men-USTelligent Community 13Thu, 30 Apr 2026 13:32:09 GMThttps://devzone.nordicsemi.com/thread/565746?ContentTypeID=1Thu, 30 Apr 2026 13:32:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:224cea36-d38c-4fa4-b2a3-31eb7198877fovas<p>Ok, thanks for confirming both points.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/565608?ContentTypeID=1Tue, 28 Apr 2026 09:06:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d4cfc2ad-4e3d-4321-b567-b4bb8a529304Hakon[quote user=""]Since <strong>fota_download</strong> and <strong>lwm2m_client_utils</strong> hardcode <strong>img_num=0</strong>, they don&#39;t support this. I&#39;ve written a patch against the SDK and would like to know whether opening a PR is the right next step.[/quote] <p>Yes, this should be fine.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/565606?ContentTypeID=1Tue, 28 Apr 2026 09:00:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ccf3c3d6-414a-4324-b5db-37975a1a0cd3Hakon<p>Hello,</p> [quote user=""]Both the existing code and the new code identify MCUboot primary partitions via PM symbols (<code>PM_MCUBOOT_PRIMARY_ID</code>, <code>PM_MCUBOOT_PRIMARY_1_ID</code>, ...). The 3.3 release notes state PM will be removed by end of 2026, with DTS-based partitioning recommended for new designs <strong>excluding nRF91 Series</strong>. Since the target here is nRF9151, I read this as PM still being the supported path for this device, so keeping <code>PM_*</code> references in the patch should be fine. Please correct me if that reading is wrong.[/quote] <p>This is correct. The partition manager will continue to be used for nrf91 series.</p><div style="clear:both;"></div>