This talk will cover how integrating Zephyr Bootloader and MCUboot will enhance the system security. It will cover about Zephyr Bootloader which contains definition of bootloader and its role in system security, benefits of using Zephyr Bootloader for system security, techniques for implementing secure bootloader. It will also cover about MCUboot which contains introduction to MCUboot and its features, advantages of integrating MCUboot, techniques for implementing secure bootloader using MCUboot. We will explore about combining Zephyr Bootloader and MCUboot for system security. Synergies between Zephyr Bootloader and MCUboot, benefits of combining the two techniques for system security, best practices for implementing zephyr bootloader and MCUboot integration for system security and case studies of successful implementations of Zephyr Bootloader and MCUboot integration for system security. In conclusion, we will cover summary of key points, importance of enhancing system security in firmware development and future directions for research and development.