Editing Godaddy hosted theme images from FTP

Hey,

I have a Multisite set up and the theme i am using calls for editing/replacing certain images from the back end (FTP) to change what is seen. However, when i replace the images, for instance the background.jpg, the changes aren’t being reflected when i navigate to the subdomain.site.com. But, i am able to verify that the file successfully uploaded and replaced what i see in /wp-content/themes/specific_theme/images folder.

Am i doing something wrong?

Please help.