I received that same firmware version from TP-Link support and installed it last night. Still wasn't able to connect with any of my Apple gear. I've boxed it up and returned it back to Amazon today....

mrsnrub wrote Do you have a link to this firmware? I'm on build 130812 and my 5GHz connection still has issues. Same here. Just got my Archer C7 last night and I can't get anything to connect on 5Ghz...