I was on 3.1.x but dont recall where I downloaded it from, so just refreshed from branch. I can compile your at_client sample on sdk 3.2.1 with toolkit 3.2.1. You have a …pm_static.yml in your board folder setting mcuboot partition to length to 0xc000 (48K), it has been the norm for a long time, but quite a small partition now. I can see you have added memory reduction lines in mcuboot.conf, and therefore mcuboot can just fit with 99.98% FLASH used. But I have overflow with 936 bytes. I can scale down in mcuboot.conf also, and can compile my project again. I think mcuboot should be increased to at least 0xd000 (52K). What do you think, and what would be the best way to override your memory layout, without touching the circuitdojo board files?