Explore the Apache Mynewt Bootloader, an open-source solution for reliable and secure firmware upgrades across various MCU architectures. Delve into the design considerations, operational flow, and security features of this fail-safe bootloader. Learn about detection and recovery mechanisms for erroneous conditions, establishment of root of trust, and methods for checking authenticity and integrity of firmware images. Examine the threats addressed, footprint and performance benchmarks, and incorporation of hardware protections. Gain insights into the flash layout, signatures, source layouts, and integration with Zephyr. Understand the secure boot scheme and its implementation in this comprehensive conference talk presented by Sterling Hughes and Chris Collins from Runtime.