Microsoft just released Windows 10 Mobile Build 14267 to Insiders in the Fast Ring. If you don’t see the build on your old Lumia, you are not alone — the latest build is only available to Insiders with a Lumia 950 XL, Lumia 950, Lumia 550, Lumia 650 or a Xiaomi Mi4 (as promised).
Today, we are releasing Windows 10 Mobile Insider Preview Build 14267 to Windows Insiders in the Fast ring. While we have been releasing preview builds for PC from our development branch for a while now, this is our first new preview build for Windows 10 Mobile from our Development Branch this year. As I mentioned a couple of weeks ago, initially we’ll make new builds from our Development Branch available only to devices that shipped with Windows 10 Mobile. Currently this includes the Lumia 950, 950 XL, 550, and Xiaomi Mi4. We plan to expand from there as we release Windows 10 Mobile to other devices.
Interestingly enough, Microsoft says that the latest build is only available to the Lumia 950, 950 XL, 550, and Xiaomi Mi4 — however, I was able to install it on my Lumia 650 which is rather interesting.
Hopefully, Microsoft will be delivering the new Redstone builds to older Lumias soon. Until then, you will just have to wait for the Cumulative Updates for Build 10586.