A fresh firmware update is rolling out for Microsoft’s Surface Pro X. There are no official release notes for the update available yet, but we have confirmed that it updates the system’s UEFI. It’s likely this update improves the Surface Pro X’s system stability in some manner.
In Windows Update, you’ll see the download listed as a “System Hardware Update” dated for April 9, 2020. Once installed, you’ll see the UEFI version move from 3.444.140.0 to 3.462.140.0.