Windows 10 for phones preview pulled for Lumia 520, 525 and 526

[Windows Central]

If you own a Lumia 520, 525 or 526 smartphone and have yet to download the new 10051 build of the Windows 10 for phones technical preview, you will find that it is no longer available. Microsoft has pulled it from circulation for those devices due to problems with rolling back to Windows Phone 8.1.

Full story from the WindowsCentral blog...