Surface Book and Surface Pro 4 receive new firmware update moments after Microsoft issued a battery fix update for its Surface Pro 3.
According to the Surface Update History support site, this update introduces new changes to four Microsoft drivers to improve battery life in the devices, including:
- Surface Management Engine: v126.96.36.1993 improves stability and performance when you change between power states.
- Surface UEFI: v90.1281.768.0 improves stability and performance when you change between power states.
- Surface Integration: v1.1.315.0 improves the device usability and battery life.
- Surface Integration Service Device: v188.8.131.52 makes sure the default Balanced power plan is set correctly when the operating system is updated.
If you have not received the update on your Surface, then manually check by going to Settings > Update & security > Windows Update and try manually forcing the download.