Iphone 5 update/restore loop issue
I have an iPhone 5. I was trying to update to iOS 8.4 through connecting it to iTunes on my Mac Book Pro (2012) and it freaked out and said it cannot update. It then had me try to restore my iPhone. That also didn't work. I'm now stuck in an update/restore loop. iTunes doesn't recognize the phone at all. The screen just has the "connect to iTunes" screen on it. When I connect the USB, nothing happens and then after about 30 seconds the iPhone reboots, brings ups the Apple logo and then goes back to the "connect to iTunes" screen and starts the process over again.
I've looked at various forums and how to's. I've tried booting in recovery mode, in dfu mode, tried a third party software (reiboot), I tried reninstalling iTunes, and I've tried deleting certain files in the ~ /Library folder connected to iTunes. Nothing has worked.
Any ideas of how to get this iPhone working again?