Updating from old theme

Hi Guys,

I am looking for some help updating our theme

I currently work on a site that uses version (3.4.7) however it was set up before I worked on it and I hasn’t been updated neither does it have an update option in settings, it says we are using the latest

We want to use the latest version for the site now and I have bought the latest enfold theme

When I go to upload the new enfold theme, I am getting an the below error

‘Destination folder already exists. /var/www/vhosts/17/149196/webspace/httpdocs/golfbreaks.ie/wp-content/themes/enfold/’

I would prefer not to have to delete the existing theme completely before uploading the new one, as it has all our branding, menus, colors etc already set up, and it is a big site. I’m sure there’l be some editing needed when the new theme updates too so may want to trial and edit

I have also tried putting in an api token and user name in the theme setting but it’s still not giving me an option to update it.

I am wondering is there any other way to get this update done, any help would be greatly appreciated

Thanks