thank you for your response.
as in my question i have mention the wordpress was installed with version 4.3.1 through cpanel site software. and this is the first time i have got a upgrade issue.
according to your suggestion yes there is a .ymal the name of the file is (cpanel::blogs::wordpress.0.yaml). how to rename. and after rename what should be the name.
i am not a tech guy my questions may sometime look foolish. sorry for that.
