During November 2025, Sungmin Won developed Linux boot support for x86-64 architecture in the google/android-cuttlefish repository. He implemented handling for bootx64.efi, updated boot configuration logic, and enhanced ESP image generation, enabling Linux to boot reliably on modern 64-bit hardware and virtual machines. This work required deep knowledge of Linux kernel integration, bootloader development, and system programming in C++. By validating end-to-end boot sequences, Sungmin expanded Cuttlefish’s platform compatibility and improved deployment flexibility for developers and QA teams. The feature addressed the need for robust EFI boot support, though no explicit bug fixes were recorded during this period.