https://devzone.nordicsemi.com/f/nordic-q-a/75729/possible-mergehex-issue-v10-12-1Found a potential &quot;weirdness&quot; with the mergehex utilty. When merging hex files containing code, dont seem to have an issue. Recently I was using mergehex create a full programming image containing MBR, Softdevice, App, custom Bootloader and UICR. Theen-USTelligent Community 13Fri, 28 May 2021 15:46:27 GMThttps://devzone.nordicsemi.com/thread/312443?ContentTypeID=1Fri, 28 May 2021 15:46:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b3352df-d2d0-48e6-b0d9-9db08a5a010bVidar Berg<p>This unfortunate bug got introduced in v10.12.1. Please try with v10.12.2 which got published on the web yesterday: <a href="https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Command-Line-Tools/Download#infotabs">https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Command-Line-Tools/Download#infotabs</a>. Sorry for the confusion.</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1622216781530v1.png" alt=" " /></p><div style="clear:both;"></div>