After the Hard Reset, your device is supposed to bring you back to your Today screen or at least the startup Dell logo. Do not expect anything else to happen.
You then need to just continue with the upgrade and it should be plain sailing from there.
Run the AximUpdate Utility
Hard Reset
Click Continue as soon as the device restarted.
Leave the device in the cradle the whole time... don't try to do anything more.
I did just that and everything went well.
BTW The X51v started going really fast after this A12 upgrade for me too. I think everyone had this same experience.
However something else happened! Please read...
Farewell-to-a-Dear-Friend
It is not what you think!
