To upgrade your server's  Country ,Provider ,Mobile ,MEP, Network List with your API Server ,

if you no need your old list and want fresh database from your API supplier,

Go - > Settings -> API Settings

Edit your API supplier

Put API key , User name what api required

Save settings

Now - > Check Options

1.Delete All Current Country and Provider list and new Synchronize
2.Delete All Current Mobile and Mobile Brand list and new Synchronize
3.Delete All Current MEP list and new Synchronize
4.Delete All Current Network list and new Synchronize

and Synchronize