You said you want to update contact list of Gmail but don’t told that what kind of update you want to with you Gmail contact list such as edit contact, deleted contact, add contact etc.
I am sharing here edit a contact in Gmail step by step follows it:
• First of all go the Google contacts option.
• Next, click a contact’s name.
• Now from the top right corner, click on edit> edit option.
• Edit the information which you want.
• Finally click on the Save option.
It must be remember that you can’t change details that automatically come from:
• Google profile contacts.
• All Contacts of work, school or organization.
• Google maps if your contact is a business.