Udating folder artwork not working


I recently purchased your Infuse app. It is installed in my phone and apple tv. Congratulations and thank you on designing such a great app.

The one issue I am having is my failed attempts to update my folder artwork. When first setting up my folder artwork, the process worked as advertised. After about a week or two later, I decided I wanted to change the artwork for three folders. I replaced the jpg files with my new artwork (jpg files with same names as original). For some reason the images won’t updated in my iOS(running latest and greatest iOS version) or, for that matter, in my Apple TV(4)(running latest iOS version). I attempted restarting the phone, I attempted restarting the Apple TV, I attempted deleting the folder artwork files, but unfortunately, none of it resulted in success. Any ideas/suggestions?

thanks in advance for your prompt response.