Interesting, looks like this update has been out for some time. I have only just received the notification. It was released around the time my tab went in for RMA with a new motherboard. Perhaps there was some conflict like people have using the unlock tool that has only just been resolved. I may give the asus device tracker a go and see if it works.
P.S. I have seen the root issues. With the warranty now expired I was thinking of unlocking anyway.
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