Nguyen Tran focused on security and stability hardening for the Renesas Gray Hawk board within the flipperdevices/u-boot repository. Over the course of one month, Nguyen addressed a critical bug by updating the device tree source (DTS) to disable RPC SPI control for the QSPI Flash, shifting access to CR-side control as required for the R8A779H0 V4M Gray Hawk board. This change, implemented through embedded systems expertise and device tree modifications, improved the board’s reliability and security. Nguyen’s work demonstrated a targeted, in-depth approach to hardware configuration, emphasizing careful control over flash memory access in a production environment.