The October 2019 firmware update, according to the company, finally resolves the issue where dedicated graphics adapter would disappear unexpectedly from Device Manager. In addition, the new update also fixes the problem where the processor will throttle down significantly. Here’s the list of changes available with the Surface Book 2 firmware update for October 2019:
Surface Base 2 Firmware Update – Firmware: 1.75.139.0 improves battery stability. Surface System Aggregator – Firmware: 182.1004.139.0 resolves an issue where the CPU will throttle down to .4GHz and improves battery stability. Surface UEFI – Firmware: 389.2837.768.0 resolves an issue where the display adapter disappears from Device Manager.
The update is available for devices running Windows 10 version 1803 and later, including version 1903. The update should download and install automatically, but if you have not received it on your Surface, then you can go to Settings > Update & Security > Windows Update and try to force the download manually. All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.
