Developed Agilex5 A5F4 JTAG ID support for the zephyrproject-rtos/trusted-firmware-a repository, enabling automatic detection and reconfiguration of the Agilex5 B0 A5F4 FPGA variant. This work focused on embedded systems and hardware abstraction, using C to implement a detection function that streamlines device initialization. By automating variant selection, the solution reduced manual configuration steps and minimized the risk of misconfiguration during bring-up. The approach improved maintainability and consistency in FPGA variant handling, aligning with broader detection strategies. The update enhanced hardware compatibility and platform resilience, supporting more efficient deployment of Agilex5-based systems across diverse environments without introducing new bugs.