Surface Duo picks up January 2021 firmware update

Surface Duo gets its fourth firmware update to improve stability, audio quality, brings a new feature, and patches security vulnerabilities.

Surface Duo app group (source: Microsoft)
Surface Duo app group (source: Microsoft)

Microsoft has released the fourth firmware update for its Surface Duo device to improve stability and audio quality. You can now add called to conference calls, and this rollout patches security vulnerabilities with the Android operating system.

According to the Microsoft support website, the firmware update was originally made available on January 27, and it is meant only for unlocked devices.

Surface Duo firmware update

Here are the improvements available for Duo in January 2021:

  • Fixes scenarios outlined in the Android Security Bulletin (December 2020 and January 2021).
  • Adds the ability to add a caller to conference calls in certain conditions.
  • Improves UI stability.
  • Improves audio quality when using speaker mode.
  • Improves touch stability.

The update will download and install automatically on your device, but you can get it from the Android update settings page if you have not received it.

The Microsoft Surface Duo is a dual-screen device connected using a 360-degree hinge design that creates an 8.1-inch canvas that runs on Android 10, and you can order it now from the Microsoft Store for $1400.

About the author

Mauro Huculak is a Windows expert and the Editor-in-Chief who started Pureinfotech in 2010 as an independent online publication. He is also been a Windows Central contributor for nearly a decade. Mauro has over 12 years of experience writing comprehensive guides and creating professional videos about Windows, software, and related technologies, including Android and Linux. Before becoming a technology writer, he was an IT administrator for seven years. In total, Mauro has over 20 years of combined experience in technology. Throughout his career, he achieved different professional certifications from Microsoft (MSCA), Cisco (CCNP), VMware (VCP), and CompTIA (A+ and Network+), and he has been recognized as a Microsoft MVP for many years. You can follow him on X (Twitter), YouTube, LinkedIn and