Microsoft has started rolling out new firmware updates for Surface Laptop 6. The latest update is available for Surface Laptop 6 for Business running Windows 11, Version 23H2 or later.
The new firmware update enables a dynamic backlight experience that will adjust your keyboard lighting for the best visibility as your environmental lighting conditions change. The update is listed as an “April 29 release” on the Surface Laptop 6 Update History page.
Changelog for April 29, 2026 Updates
Below is the complete changelog provided by Microsoft for the new updates. It includes the name and version listed in the Windows Updates and the name listed in Device Manager.
| Windows Update Name | Device manager |
|---|---|
| Surface Firmware Driver Update (55.3.139.0) | Surface Keyboard – Firmware |
Getting the Updates via Windows Update
To download the latest Firmware Update, follow these instructions to access it through Windows Updates.
On Windows 11:
- Go to Start > Settings (Win + I)
- Go to Windows Update and click on the “Check for updates” button
On Windows 10:
- Go to Start > Settings > Update & security.
- From the Windows Update tab, click Check for updates
If your Surface Laptop 6 did not receive the update, it should now be available on the Windows Update list.
Downloading the Updates from Microsoft
Alternatively, you can download the latest cumulative driver and firmware update for Surface Laptop 6 from the Microsoft Download Center via the following links.
- Surface Laptop 6 Drivers and Firmware
https://www.microsoft.com/download/details.aspx?id=105946 - Surface Laptop 6 Download Center
https://surfacetip.com/download/surface-laptop-6/
Surface Laptop 6 Update History
2026
How to get updates, improvements and fixes in the updates, and additional steps for Surface Laptop 6 for Business.View
- Firmware updates can’t be uninstalled or reverted to an earlier version, when you install the latest update, you'll also get all the previous updates if your Surface doesn't have them already. Only updates that apply to Surface will be downloaded and installed, and after the updates are installed, restart your device to complete the installation process. To restart your device, select Start , and then select Power > Restart.View
- Enables a dynamic backlight experience that will adjust your keyboard lighting for the best visibility as your environmental lighting conditions change.
- Addresses potential security vulnerabilities that may allow denial of service, escalation of privilege, code execution, or information disclosure, fixes an issue with incorrect serial numbers and model names for the device, and fixes an issue causing unnecessary battery drain, improving power efficiency.View
2025
- Resolves an issue where the device incorrectly shows an “Unauthenticated battery detected” notification, mitigates the battery drain issue, and fixes an issue that causes camera instability.View
- Addresses potential security vulnerabilities related to Intel® Chipset Firmware Advisory INTEL-SA-01280 that may allow escalation of privilege or information disclosure. , addresses potential security vulnerabilities that may allow denial of service. , fixes an issue with slow performance to improve the user experience, and resolves an issue that results in devices using low-power Wi-Fi levels in some countries instead of the country-specific power levels. .View
- Addresses potential security issues that may allow escalation of privilege, denial of service, or information disclosure, addresses a potential NPU security vulnerability that may allow an attacker to load malicious code, improves stability by fixing blue screen issues related to using extended monitors, and more.View
- Addresses device security vulnerability related to Intel advisory CVE 2025-20006 that may allow unauthenticated user to enable denial of service via adjacent access. and prevents unexpected failures or disruptions of audio streams by improving the stability and reliability of the audio system to enable uninterrupted audio playback and recording.View
- Ensures that devices can boot successfully using the Preboot Execution Environment (PXE) and enhances device connectivity and functionality when docked, ensuring seamless compatibility and improved performance with connected peripherals.View
- Addresses a potential security vulnerability related to Intel® Graphics Software Advisory INTEL-SA-1253 that may allow escalation of privilege or denial of service. , addresses a security vulnerability related to Intel® Arc™ & Iris® Xe Graphics Software Advisory CVE-2024-21864that may allow unauthenticated user to potentially enable escalation of privilege via adjacent network access. , improves system stability and display experience by reducing Timeout Detection and Recovery (TDR) events, which led to the system becoming unresponsive or crashing, and more.View
- Addresses device security vulnerabilities against potential threats, addresses security vulnerability related to Dolby advisory CVE-2024-44074 that compromised local privilege. , and enables improved performance when connected to the newly launched Surface USB4 Dock for Business.View
2024
- Enhances the overall security posture of the devices, protecting customers from potential threat, improves the display experience by reducing the frequency of screen flickering, and addresses a performance issue with Citrix Workspace* application exhibiting sluggish behavior when interacting with a virtual desktop. .View
- Addresses system performance issue when the system is running in Recommended power mode and enhances the Battery Smart Charging feature by activating protection only when necessary, which helps extend the battery's lifespan and maintain its health.View
- Circumvents the situation where the fan remains operational even when not required and enhances user experience by regulating system temperature when an external monitor is connected.View
- Improves device's ability to regulate temperature effectively when linked to a Surface Dock, optimizing performance and longevity and fixes an issue that incorrectly changed the form factor of the Notebook to that of a Convertible.View
- Improve the camera, Windows Studio Effects, battery, charging, thermal, power management, and more.View
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