I have now tried both methods without any success
Method 1 can't see the tablet, it tells me to do a pin-hole reset and click "yes"... but that just takes me back to the same slide.
Method 2 gets all the way to flashing the image, however the status bar never moves (have left it for 2 hours) and the tablet just sits at a blank screen (not the acer logo as the tutorial says)
I tried reflashing the stock rom, factory resetting, clearing the cache, and trying again, all with exactly the same results.
I'm still stuck on stock, unrooted, 3.2
And the worst thing is, with so many people having success with this, it's likely to become the "official" way of rooting 3.2, leaving nobody any incentive to find another way, and me stuck without root