The Lumia Cyan update is now rolling out for Nokia's large screen smartphone, Lumia 1520.

Last week, Microsoft confirmed the roll-out of Lumia Cyan update, which adds Windows Phone 8.1 and new Lumia features, for Nokia's Lumia series smartphone running Windows Phone 8.

The Lumia Cyan update with new Windows Phone 8.1 is now available for Lumia 1520 users in Finland and India. Although the Nokia software page suggests the update for Lumia 1520 in the aforementioned countries is "under testing" status, WPCentral claims that the update is seeding for Lumia 1520.

Those who are in Finland and India should manually check for the update in their Lumia 1520 by navigating to Settings>> Phones update>> Check for update.

Lumia 1520
Screenshot of Lumia Cyan update running on Lumia 1520.

WMpoweruser now reports the Lumia Cyan update is released for UK Lumia 1520 users. As the above screenshot suggests, the Windows Phone 8.1 software comes with OS version 8.10.12397.895.

Users will not be able to use the phone while the update is being installed, which should take about 15 to 30 minutes. If the update is major, this could exceed up to two hours, depending on the model of the phone.

Those who do not know how to update Lumia Windows Phone 8 devices to Lumia Cyan, may follow our guide here.

Apart from the Lumia Cyan goodies, the Windows Phone 8.1 update for Lumia 1520 and Lumia Icon brings several changes such as improved audio quality in the video, camera capabilities with enhanced colours and low light performance, continuous autofocus and improvements to RAW DNG images.