i have nokia Lumia 520 , i got windows 10 insider update 10.0.10586.164 after that i am unable to get updates evry time i roll in Isider program it says ur device is cheking for updates but all every time for slow fast and priew rings no updates are available ?? what is the problem with that ?? how to fix it ?? or is this the last version for lumia 520 ???
The Threshold update line (10586.xxx) is no longer available. All 3 rings are now Redstone (14393.xxx) which is not available for your device.