hello vini,
may I know what’s the command-line to flash your target, i.e. reComputer industrial J4012(Orin NX 16G) - Seeed Studio, it should not using the board configuration file, jetson-orin-nano-devkit, right?
it should related to create OTA payload for customize board, you may see-also similar forum topic, such as Topic 332980 for the steps to update l4t_generate_ota_package.sh and ota_board_specs.conf for customize board to create OTA payloads.