Improvements and fixes in the updates
August 2022 updatesAugust 03 release
The following update is available for Surface Book 3 devices running Windows 10 May 2020 Update, Version 20H1, or greater.
This update improves device stability and reliability when using Surface Dock 2 and Surface Pen 2.
Windows Update Name Device Manager Surface Firmware Update Surface - System - 22.214.171.124 Surface System Aggregator - Firmware Surface - Extension - 126.96.36.199 Surface System Aggregator - Firmware Surface - Firmware -10.409.139.0
Source: Surface Book 3 update history
Manual download: Download Surface Book 3 Drivers and Firmware from Official Microsoft Download Center