During November 2024, Fan Ni focused on stabilizing the espressif/qemu repository by addressing two critical bugs in the firmware update and device communication pipelines. Working in C and leveraging expertise in device drivers and embedded systems, Fan Ni corrected size validation logic for firmware update information, ensuring memory and device capacities align properly to prevent upgrade errors. Additionally, Fan Ni resolved a buffer index issue in the CXL mailbox, which previously risked data corruption during DC extents retrieval. These targeted fixes improved the reliability of firmware updates and hardware management, demonstrating a strong grasp of low-level programming and system integrity.