Somehow tried to update my Nokia 520, but it seems to be getting stuck at "checking for updates" for a very long time until the 5 minute screen time out cuts in.

Thank you for the reply, wow, that's a long time to wait. It's unfortunate that Windows Phone(s) doesn't have the ability to leave the screen continuously turned on without sleeping like on some Android phones. Have to manually tap the screen then.

I don't think my 520 running on Lumia Black update has the glance screen, screen always on as an option is useful when you're reading or watching some long video, I personally set my androids to "always on" and "immediately lock via power button" to avoid accidental turning it on and keeping it on when I needed it.

On the 520, it seems maximum is 5 minutes, I thought it could run in the background too, but each time the screen time out and I turn it immediately back on, the process seemed to stop. Already on my 15th minute waiting for the "checking for updates" to change to anything useful, couldn't be the connection since I'm on 10mbps and had done a test download before pressing on "check for updates"

This is starting to be a little frustrating

Had actually posted on Nokia Malaysia regarding it. Last resort, backup, reset, try again.