Microsoft releases April 2016 firmware update for Surface Book and Surface Pro 4

• Surface System Aggregator Firmware update (v88.1134.257.0) addresses a case where after you resume the Surface Book device from hibeation and detach the clipboard, the auto-rotate feature does not work.
• Surface UEFI update (v88.1121.768.0) addresses screen flickering in Microsoft Edge and other applications.
• Intel(R) HD Graphics 520 driver update (v20.19.15.4409) improves the overall stability of the graphics driver, resolves screen flickering in several popular applications, and cases where the display does not reinitialize correctly after the device resumes from sleep or hibeation.
• Intel(R) Display Audio driver update (v8.20.0.865) supports compatibility with the updated HD Graphics Family driver.
• NVIDIA GeForce GPU driver update (v10.18.13.6200) adds support for some of the latest popular games.
• Surface Camera drivers set (v30.10586.7035.1976) improves Windows Hello stability.
  • Intel(R) AVStream Camera 2500 driver update (v30.10586.7035.1976)
  • Intel(R) Control Logic driver update (v30.10586.7035.1976)
  • Intel(R) CSI2 Host Controller driver update (v30.10586.7035.1976)
  • Intel(R) Imaging Signal Processor 2500 driver update (v30.10586.7035.1976)
  • Microsoft Camera Front driver update (v30.10586.7035.1976)
  • Microsoft Camera Rear driver update (v30.10586.7035.1976)
  • Microsoft IR Camera Front driver update (v30.10586.7035.1976)
• Surface Camera Windows Hello driver update (v1.0.45.0) improves Windows Hello stability.
• Surface Dock Integration driver update (v1.0.6.0) improves stability and compatibility with exteal monitors and passive video adapters.
• Surface Dock Firmware Update (v1.2.6.0) improves stability and compatibility with exteal monitors and passive video adapters.

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.