I never use the Xunity maintenance, there's a fix by are wizard, now if that does not work try reinstalling it again. Clear data wait, then start again, after the wizard has finish and the unplug the power thing, I would wait at least 15 mins for updates to install. I've got a T8 and had some audio probs, so I no it's frustrating, so please be patient....if you still find its not working try the live chat and we will try and resolve this for you. Live chat is office hours. You can always try,good luck and hope we can sort this out for you guys..Dave