WinCsFlags.exe and Secure Boot 2023 CA Updates – A Bridge Between Part 2 & Part 3

WinCsFlags.exe doesn’t write Secure Boot certificates into firmware — it sets intent. This deep‑dive explains how WinCS works behind the scenes, how the Secure Boot 2023 CA update actually flows from Windows to UEFI firmware, why two reboots are expected, and how to validate success using UEFICA2023Status. A practical, engine‑room explanation bridging Part 2 (0x5944) and Part 3 (validation) of the…