The new firmware also shows a new progress bar while updating the system and according to Microsoft this is what the update fixes: Surface Pro UEFI update (v3.11.350.0)

Resolves scenarios where the device will boot to a black screen if McAfee Defense Encryption 7.1.1 is installed. Optimizes the FWPOST time to 3.7 seconds with the fast boot enabled. Prevents situations where system clock loses time when battery falls below 3%.

Surface Home Button driver update (v2.0.1174.0)

Along with the pen update below, this helps prevent scenarios where device may accidentally wake up from sleep while being stored or carried.

Surface Pen Settings driver update (v2.5.14.0)

Along with the home button driver update above, this helps to prevent scenarios where the device may accidentally wake up from sleep while being stored or carried.

Wireless Network Controller and Bluetooth driver update (v15.68.3066.135)

Enables better throughput after waking from sleep and connecting to an 802.11AC network. Ensures Infra scan list is not empty while connected to a wireless display adapter. Resolves an issue connecting to Cisco 1242 access points. Ensures device reconnects properly to a hidden SSID using a 5Ghz DFS channel after waking from sleep. Adds customer-requested functionality to prefer 5Ghz connections when both a 2.4ghz and 5ghz connection are present with the same SSID.

To apply the firmware update manually, go to PC settings, Update and recovery, tap Check now, and proceed with the installation. But also remember that the update will install automatically. Source Microsoft 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.