Steps To Update Begin with checking the notification for the update on the phone. Do so by checking Settings>Phone Update>Check For Updates. Make sure you have a consistent network on Wi-Fi available while updating the same. Proceed to viewing and installing updates next by tapping your notification message. Follow up with all the instructions that appear on-screen. You can either choose installation of the update right then or save it for later. Things To Keep In Mind The main updating might take a little under 30 minutes but if it is major, then it consumes up to a couple of hours. Keeping following the prompts for the update. Also, do not panic on frequent handset restarts. If you want to schedule this update for a later time when you are free, go to Settings> Phone Update and set the time option as per your own preference. Read More: Lumia 940 XL Leaked Details Hints At New Action Centre And Revamped Apps Samsung Galaxy S6 Active To Be Backed With 10,000 mAh Battery ?