I went to Windows Insider app to get new slow ring builds (*.218 right?) and I headed back to Windows update (in settings app) and... nothing.
Phone: Nokia Lumia 920
OS version: 10.10586.164
Phone: Nokia Lumia 920
OS version: 10.10586.164
Try Release Preview ring, yo.
Soooo .218 is already part of Redstone?