Improvements and fixes in the updates
March 2022 updates
March 25 release
The following update is available for Surface Laptop 4 devices with AMD Processor running Windows 10 May 2020 Update, version 20H2, or greater.
This update:
- Improves Graphics stability and performance.
- Enables Windows 11 feature to improve battery life.
- Improves support of Surface Dock 2.
Windows Update Name Device Manager Surface - Firmware - 11.300.139.0 Surface System Aggregator - Firmware Advanced Micro Devices, Inc. - Display - 27.20.14068.3 AMD Radeon (TM) Vega 9 Graphics - Display Adapter / AMD Radeon (TM) Vega 11 Graphics – Display adapters Surface - Extension - 6.8.137.0 Surface Dock 2 Firmware Update AMD - System - 1.2.0.113 AMD UART Controller - System devices
Source:
Surface Laptop 4 update history - Microsoft Support
List of updates for Surface Laptop 4

Manual download:
Download Surface Laptop 4 with AMD Processor Drivers and Firmware from Official Microsoft Download Center
All current drivers and firmware for the Surface Laptop 4 with AMD Processor
www.microsoft.com