Atheiste worked on the flipperdevices/u-boot repository, delivering a major configuration refactor focused on centralizing altbootcmd settings. By migrating these configurations from scattered environment files and config.h into a unified Kconfig and defconfig structure, Atheiste streamlined bootloader configuration and improved build consistency. This approach, implemented in C and leveraging expertise in embedded systems and Kconfig, reduced maintenance overhead and enforced consistent boot fallback behavior across builds. The work established a single source of truth for boot command settings, laying a solid foundation for future boot-related enhancements and simplifying ongoing development and maintenance for the U-Boot project.