Surface Book 3 latest firmware update bring storage stability improvements 
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The latest Surface Book 3 firmware release brings storage stability improvements. The new firmware was announced in May 2020 for the third-gen Surface Book 3. The latest Surface Book3 update comes only with under-the-hood updates.

You need to remember Surface firmware updates cannot be uninstalled like Windows updates. Make sure you check for known issues and additional notes before installing the latest update. 

About April 2022 firmware for Surface Book 3
As mentioned the April 2022 firmware for Surface Book3 brings improved system storage stability.

  • Windows Update Name: Surface Firmware – 6.40.139.0
  • Device Manager Name: Surface Storage Firmware Update – Firmware

Surface Book 3 variants that run Windows 10 version 1903 (May 2019 Update) and higher are eligible for the latest firmware update. The firmware update is available via Windows Update or the official Surface Support website.

The firmware update will be available until May 25 2024 for all Surface Book3 users. The update does not apply to Windows updates, and your Surface device may keep getting Windows updates and new features even after reaching its end of life.

Surface devices that received the April 2022 firmware update:

  • Surface Laptop Studio – Stable Channel.
  • Surface Laptop Studio – for Windows Insiders.
  • Surface Go 3.
  • Surface Duo and Surface Duo 2.

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