What is the procedure of xbox live update?

I think you should consult the technical team before doing anything to it. You can also use the website information for the support. It has a list of all frequently asked questions. To get xbox support first of all open the xbox support website. If you don't know the link then just google it to find the link. On the website you will see different sections like xbox 360, xbox live, kinect and games for windows. Now click under xbox live. Under xbox live there are 5 main options and some hidden ones. So options are browse, manage membership, gamertag issues, marketplace to buy stuff and see all. Click on the option that your problem is related to. After successfully doing this you can be routed to FAQ for those. But if they don't help, you can call them for some assistance. The contact details are shown on the website and its a free of cost assistance for its users.