Surface Book 3 firmware update focuses on security and Battery Smart Charging

Surface Book 3 Review Tablet (Image credit: Daniel Rubino / Windows Central)

What you need to know

A new firmware update is available for the Surface Book 3.
The update improves Battery Smart Charing reliability and also improves security.
You can grab the new update through Windows Update now.

Microsoft's Surface Book 3 has a new firmware update. The update is available for both the Surface Book 3 13.5-inch and the Surface Book 3 15-inch. As is the case with most firmware updates, this update doesn't include any new features. Instead, it includes several performance and security improvements. Some of the most significant changes include improvements to Battery Smart Charging reliability and and improvements to system stability.

Here's what's new for the Surface Book 3, as found in its release notes:

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Firmware version	Update info
Intel – SoftwareComponent - 1.61.251.0	Addresses security updates and improves system stability.
Intel – System - 2031.15.0.1743	Addresses security updates and improves system stability.
Intel - Extension - 1952.14.0.1470	Addresses security updates and improves system stability.
Surface – HIDClass - 3.31.139.0	Improves system stability and addresses system bugcheck.
Surface - System - 6.105.139.0	Improves integration between system services and addresses system bugcheck.
Surface – Firmware – 13.0.1594.2	Addresses security updates and improves system stability.
Surface – Firmware – 9.101.140.0	Addresses security updates and improves system stability.
Surface - Firmware - 10.204.139.0	* Improves Battery Smart Charging reliability and improves kiosk mode.
Surface - Extension - 1.61.137.0	* Improves Battery Smart Charging reliability and improves kiosk mode.
Surface - System - 3.85.139.0	Resolves application uninstallation issues in low power state.

You can grab the latest updates for both the Surface Book 3 13.5-inch or Surface Book 3 15-inch through Windows Update now.

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Sean Endicott is a news writer and apps editor for Windows Central with 11+ years of experience. A Nottingham Trent journalism graduate, Sean has covered the industry’s arc from the Lumia era to the launch of Windows 11 and generative AI. Having started at Thrifter, he uses his expertise in price tracking to help readers find genuine hardware value.

Beyond tech news, Sean is a UK sports media pioneer. In 2017, he became one of the first to stream via smartphone and is an expert in AP Capture systems. A tech-forward coach, he was named 2024 BAFA Youth Coach of the Year. He is focused on using technology—from AI to Clipchamp—to gain a practical edge.