How do I fix error 48 in iTunes when trying to restore my iPhone 4s?

Hey friend, sorry to bother you, I've already been told that it doesn't work on a Mac. This error is new, but I'm telling you, I don't think there's a solution. I have an iPhone 4s, I had 8.3 jailbroken, and I updated to 8.4 and got error 48. Now I can't downgrade or update. I don't think this error will ever be fixed.
 
I'm leaving you this video so you can comment. 
https://www.youtube.com/watch?v=xfInM1T4hR8