all you need to do is download the firmware to and sd card but it is two downloads. the first you download is 6.3mb and put it on the sd card first with a labtop or whatever then stick it in the tab to get to update then the green man will come back and it will not cut off. so the take the sd card out to delete the first 6mb one and put the other other one on the sd card witch is 158mb. then put the sd card back in the tab then hit the reset button with a niddle or something. takes a few mins to do this step but you will know its done right it will come as normal take out you sd card and your done.
here is the links to the files needed:
6.3 MB one
158 MB one
you might also be able to just use the 158mb one but i used the both so dont know
Both file names are the same so you might have to save them in 2 locations or something of the sort