During February 2025, this developer upgraded the AT91Bootstrap bootloader to version 4.0.10 for v4-capable targets within the coolsnowwolf/immortalwrt repository, focusing on enhancing reliability and reproducibility in embedded systems. They updated the Makefile to pin the new bootloader version and mirror hash, ensuring that builds consistently pulled the latest stable release across all relevant hardware. Their work emphasized build system hygiene and compatibility, validating integration on affected devices. Utilizing Makefile and embedded systems expertise, they delivered a targeted feature that improved system stability, with no major bugs reported during the period and a clear focus on maintainable build processes.