Well that didn’t take long at all. If you’re looking for a very simple and quick way to unlock and root your AT&T or Sprint HTC One, you can do it now thanks to hasoon2000 over at XDA. He already posted a toolkit for the international version a month ago, so this is very similar. This desktop application will install HTC Drivers, unlock the bootloader, and flash your own recovery. You want to make sure you grab the correct download that matches the carrier version of your phone so hit the appropriate source link below for instructions.