In March 2025, Lizeb focused on improving build reliability for ARM-based systems in the denoland/chromium_build repository. Addressing a persistent build failure, Lizeb fixed incorrect ARM64 assembly and refined NEON feature detection, ensuring accurate identification of hardware capabilities. This work involved low-level programming in C++ and a deep understanding of ARM architecture and build systems. By stabilizing ARM64 builds and enhancing NEON detection, Lizeb reduced CI flakiness and improved cross-platform consistency. The targeted bug fix demonstrated careful analysis of architecture-specific issues, resulting in more robust and maintainable build processes for ARM targets without introducing new features during the period.