During September 2025, Michael Filtser focused on enhancing system stability and cross-architecture robustness in the tenstorrent/tt-umd repository. He addressed a critical bug in C++ core development by modifying grid size queries for non-grid-arranged cores, such as ETH, to safely return a default value of (0,0). This targeted fix prevented runtime crashes and improved reliability when handling diverse core layouts. By refining the grid management logic, Michael reduced edge-case failures in multi-core environments and contributed to the maintainability of the codebase. His work demonstrated depth in bug fixing and system stability, laying groundwork for future architectural improvements.