Recently, Surface Pro 4 devices received a second firmware update in July, but the new changes and improvements were unknown. However, you can now see exactly what was fixed and improved in the Surface Pro 4 update history page.
What’s new in Surface Pro 4’s latest firmware
According to the Microsoft changelog for Surface Pro 4, these are the new changes.
- Marvell AVASTAR Bluetooth Radio Adapter – Bluetooth: 15.68.9114.29 implements changes to meet EU regulatory requirements.
- Intel Iris Graphics 540 – Display adapters: 184.108.40.20627 improves DX12 and power performance.
- Surface Embedded Controller Firmware – Firmware: 103.1744.256.0 improves system stability.
- Surface Management Engine – Firmware: 220.127.116.119 improves system stability.
- Surface UEFI – Firmware: 107.1741.768.0 improves Wi-Fi performance when waking from sleep.
- Marvell AVASTAR Wireless-AC Network Controller – Network adapters: 15.68.9114.29 implements changes to meet EU regulatory requirements.
- Intel Smart Sound Technology (Intel SST) Audio Controller – System devices: 18.104.22.1682 improves video performance in some applications.
- Intel Smart Sound Technology (Intel SST) OED – System devices: 22.214.171.1242 improves video performance in some applications.
- Surface Accessory Device – System devices: 1.1.507.0 improves system stability.
- Surface Pen Pairing – System devices: 126.96.36.199 enable Surface Pen simple pairing and features.
- Surface Integration – System devices: 188.8.131.52 enables Power Slider feature improving battery life, and improving adaptive brightness feature.
The new July 2017 firmware update for Surface Pro 4 should download and install automatically. However, if you have not received the update on your Surface, then go to Settings > Update & security > Windows Update and try to force the download manually.