WordPress theme 'cheatin uh' issue

Hi,
I recently came across the post of resolving the issue of ‘cheating uh’, the message you get when you upload image/logo on elegant themes epanel.
This the link : http://www.wpthemehelp.com/knowledgebase/cheatin-uh-wordpress-3-4-bug-fix/

I am doing manually, so step 2 says to “Step 2: Edit admin/functions/functions.mediauploader.php” but i can’t find the functions folder. Where is it? Checked the admin folder, but nothing 🙁 Hope to see a reply.
Thanks