What worked for me:
Upload the 2.7 Zip file to your server
Un-archive or decompress it.
Delete the wp-content folder.
Move the files & folders to where you had your old wordpress files and overwrite them.
Visit: https://www.InsertYourSiteHere.com/wp-admin/
It may ask you to update your database.
And with one click (If you’ve gotta update your database), your outta the woods.
Hope this helps!
EDIT: It’d probably help if I told you the error I had:
“Fatal error: Call to undefined function: wp_remote_request() in /home/content/a/s/a/asantos24/html/wp-includes/update.php on line 58”
I came up with a few others as well, but the course of action above fixed ’em.
