[jkhill74]

I'm tired of waiting on ATT. Is it possible to upgrade through the Insider program to the W10M version that was released to the public? I'm not really looking to be on the cutting edge of releases but there are features of W10M I'd like to start using. For all we know W10M is on ATT's back-burner while they pursue some iPhone or Samsung project that will prove more lucrative to them. If ATT would offer a release date (which I know will never happen), waiting on a release date is easier than being kept in total darkness.

[Maurizio Troso]

I'm tired of waiting on ATT. Is it possible to upgrade through the Insider program to the W10M version that was released to the public? I'm not really looking to be on the cutting edge of releases but there are features of W10M I'd like to start using. For all we know W10M is on ATT's back-burner while they pursue some iPhone or Samsung project that will prove more lucrative to them. If ATT would offer a release date (which I know will never happen), waiting on a release date is easier than being kept in total darkness.

If you got a Win10 eligible phone, you can join the Insider Program and take the Release Preview Ring, you'll find the actual official Win10 Threshold build

[jkhill74]

Awesome! Thanks for the reply!

[RumoredNow]

If you use Insider on the Release Ring, the same version is fetched as the recent public Upgrade received by these phones (10.0.10586.xxx): Phones Eligible for Windows 10 Mobile Official.

If your phone is not on the supported list, then 10586.xxx (Threshold) is the end of the line. You may as well use Insider and select Production to un-enroll your phone from Insider, but at least you have W10M. WaaS (Windows as a Service) will deliver future updates within Threshold to you without any Insider access required.

If your phone is on the eligible list and you go Insider and stay on the Release ring you get the next public version early as Release ring in effect is the RTM. This will deliver the most stable Redstone builds to you earlier than OTA push with minimal risk. Or return to Production after Upgrade to stay current with Official and get your updates via WaaS.

Check out this thread: Windows Insider Testing and You [Recommended Guidelines]

For right now, Windows Device Recovery Tool is only flashing 8.1 to models that did not launch with 10 so it is the way to revert if you don't care for W10M: How can I recover/reset/restore my phone software?