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Windows 10 Mobile Build 10586.63 to be the Windows Phone 8.1 upgrade build

Windows 10 Mobile 10586.63

We reported about the latest cumulative update Build 10586.63 from BuildFeed. Now it seems this is the build that will be available to Windows Phone 8.1 users as the upgrade build, when they upgrade to Windows 10 Mobile soon.

Microsoft is very close to releasing the Windows 10 Mobile update for older Lumias running Windows Phone 8.1. We shared an anonymous tip claiming official Windows 10 Mobile roll-out to begin on January 12, so seems Carriers are already in preparation mode for their devices. T-Mobile Germany also confirmed that Windows 10 Mobile update for Lumia 535, Lumia 635, Lumia 640, Lumia 640 XL, Lumia 830 and Lumia 930 is coming very soon.

You can read what features and changes Windows 10 Mobile brings with itself by clicking here. Click here to read our detailed tutorial on how to prepare your Windows Phone 8.1 devices for Windows 10 Mobile update. You can read all our Windows 10 Mobile tutorials by clicking here.


Nayan has more than 10 years of experience of covering Technology and innovations. He is a big Nokia fan and Tech disruptions aficionado. He loves to review new cool gadgets and writing about Android, iOS, Gadgets and general Technology stuff. He has been associated with other well-known Tech sites WinCentral and GadgetOx since long. He currently sports a Lumia 950 XL and Nexus 5X. Other interests include listening to Nu-Metal Hits and Kick-Boxing. Write to him at Email: [email protected]