Good day!
Hi, djherceg. You may check this link: https://www.microsoft.com/en-us/mobile/support/faq/?action=singleTopic&topic=FA144485 for info regarding the availability of the Windows 10 Mobile upgrade with the Lumia devices running Windows Phone 8.1. ^_____^
Thank you for your answer. I checked the link you provided, and found out that it says this: "Only phones running Lumia Denim (OS version 8.10.14219.341, or higher) can take advantage of the upgrade to Windows 10. "
My Lumia 820 is running Denim and the OS version is 8.10.14234.375, which is clearly higher than required. Therefore I think my phone satisfies both conditions for the upgrade. The Upgrade Advisor, however, says that my phone is not supported. Why is that?
P.S. I also remember when the upgrade to Windows 10 was promised for all phones running WP8.1. You may check this link: https://youtu.be/L2vwjQLAN08.