I tried to update my 1520 to WP10. Upgrade advisor found an upgrade and told me to go "settings -> phone update" to upgrade my phone. I clicked the "check for updates" button but it still says my phone is up to date. I tried rebooting my phone, but that didn't solve anything. Upgrade advisor keeps telling me that my phone is ready to upgrade.
What gives?
Could be busy servers. They are probably smoking the last couple of days.
Can you look in Settings > extras & info... What is your Manufacturer Name and Mobile Operator?