iPad Air 2 will not upgrade to latest iOS

iPad Air 2 is stuck in iTunes mode , will not upgrade to latest iOS.

First tried over WiFi which is how I normally upgrade the iOS , worked fine in the the past , but this time it would get about half way into the upgrade and would stop. I tried this numerous times on different days.

I had some spare time yesterday so I thought I would try to upgrade by connecting my iPad to my laptop with my USB charging cable and it failed.

Now I am stuck with a iPad in restore mode no matter what i do. I have tried 4 USB cables , one brand new, two different laptops , and two USB ports on each laptop with the different cables.

Called Apple Support last night with no luck, and again this morning hopping to get another tech with a different perspective . No luck this morning either.

The best I can come up with is wait till Apple releases a new update for iOs and try again to download and install the update. Looking for any help I can get please . Apple store is too far away to take in , and am not a big fan of the mail in option.

Thanks in advance for any suggestions or help.