2nd update today! 4th Jan
Thanks to GLS9 and Baseballfanz for the info. It seems we have a universal root. 'Nachoroot'.
Check it out here if you were left stuck with the other methods. http://forum.xda-developers.com/showthread.php?t=1427838
Think people are getting themselves in knots a little.
Using this method to root does NOT open up the vulnerability. It only uses it to root and also attempts to patch it. The vulnerability is there whether you root or not.
The warnings regard...
I didn't rename, just unzipped to WW_epad-user-188.8.131.52.zip. Kept this zipped and put in on the external micro sd. Then rebooted. Wasn't docked.
I've updated the OP to make it a bit clearer.
Hope that helps.
I didn't use recovery. Just rebooted and the tab detected it. I clicked the triangle in the bar, it offered to update and went from there.
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