Microsoft is rolling-out firmware updates for Surface Book and Surface Pro 4. These Firmware updates bring many new features and fixes. This is how you can update manually.

Step 1:Go to Start Windows logo, and select Settings > Update & security > Windows Update.
Step 2:Select Check for updates. If updates are available, they will install automatically.You may need to restart your Surface after the updates have installed.

 

Check below for detailed changelog for both Surface Book and Surface Pro 4.

Surface Book Changelog:

  • System Hardware Update – 2/17/2016
  • Microsoft driver update for Surface UEFI
  • Microsoft driver update for Surface Management Engine
  • Microsoft driver update for Surface System Aggregator Firmware
Note
When Surface updates are provided via the Windows Update service, they are delivered in stages to Surface customers. As a result, not every Surface will receive the update at the same time, but the update will be delivered to all devices. If you have not received the update then please manually check Windows Update later.
  • Surface Management Engine update (v11.0.0.1202) improves system stability.
  • Surface System Aggregator Firmware update (v88.1081.257.0) improves accuracy of battery status and battery life during sleep.
  • Surface UEFI update (v104.1085.768.0) improves battery life and improves stability during power state transition changes into and out of sleep states.
  • Intel® Precise Touch Device driver update (v1.1.0.226) improves stability during power state transition changes into and out of sleep states.
  • Intel® HD Graphics 520 driver update (v20.19.15.4364) improves display stability, system stability and battery life.
  • Intel® Display Audio driver update (v8.20.0.745) supports compatibility with the updated graphics driver.
  • Realtek High Definition Audio(SST) driver update (v6.0.1.7734) improves system stability.
  • Intel® Smart Sound Technology (Intel® SST) Audio Controller driver update (v8.20.0.877) improves system stability.
  • Intel® Smart Sound Technology (Intel® SST) OED driver update (v8.20.0.877) improves system stability.
  • Intel® Management Engine Interface driver update (v11.0.0.1176) improves system stability.
  • Intel® Serial IO GPIO Host Controller driver update (v30.63.1603.5) improves auto rotation reliability when tablet mode is turned off.
  • Intel® Serial IO I2C Host Controller driver update (v30.63.1603.5) improves auto rotation reliability when tablet mode is turned off.
  • Surface Book Base Firmware driver update (v1.2.0.0) improves battery life during sleep.

Surface Pro 4 Changelog:

The following update will be delivered as multiple updates when you view your update history:

  • System Hardware Update – 2/17/2016
  • Microsoft driver update for Surface UEFI
  • Microsoft driver update for Surface Management Engine
  • Microsoft driver update for Surface System Aggregator Firmware
Note
When Surface updates are provided via the Windows Update service, they are delivered in stages to Surface customers. As a result, not every Surface will receive the update at the same time, but the update will be delivered to all devices. If you have not received the update then please manually check Windows Update later.
  • Surface Management Engine update (v11.0.0.1202) improves system stability.
  • Surface System Aggregator Firmware update (v103.1081.260.0) improves accuracy of battery status and battery life during sleep.
  • Surface UEFI update (v104.1085.768.0) improves battery life and improves stability during power state transition changes into and out of sleep states.
  • Intel® Precise Touch Device driver update (v1.1.0.226) improves stability during power state transition changes into and out of sleep states.
  • Intel® HD Graphics 520 driver update (v20.19.15.4364) improves display stability, system stability and battery life.
  • Intel® Display Audio driver update (v8.20.0.745) supports compatibility with the updated graphics driver.
  • Realtek High Definition Audio(SST) driver update (v6.0.1.7734) improves system stability.
  • Intel® Smart Sound Technology (Intel® SST) Audio Controller driver update (v8.20.0.877) improves system stability.
  • Intel® Smart Sound Technology (Intel® SST) OED driver update (v8.20.0.877) improves system stability.
  • Intel® Management Engine Interface driver update (v11.0.0.1176) improves system stability.
  • Intel® Serial IO GPIO Host Controller driver update (v30.63.1603.5) improves auto rotation reliability when tablet mode is turned off.
  • Intel® Serial IO I2C Host Controller driver update (v30.63.1603.5) improves auto rotation