I don't seem to have any trouble with the update. Currently have a 2ohm carto and have removed and re-attached it, has no problem maintaining 11W output. I do notice that the voltage setting is very slightly off given the set wattage; 11W on a 2ohm carto sets it to 4.6V (10.5W) rather than 4.7V (11W).
Realtime atty detection and voltage adjustment works fine, so that's good -- it's finally true VW now, which makes it much more attractive.
The "auto-scroll" method is ridiculous. Flick three times in a direction and it'll start to auto-scroll. Why, oh why did they just not set it to auto-scroll by holding in one direction? And not just in wattage, but in every menu? Look, Joyetech, I'd like to introduce you to a nice fellow, his name is Sir William of Ockham. He'd like to show you his razor.
Well, it's a start, anyway. There are still some things they need to address, but one of the biggies has been taken care of.
Keeper, I think the reason it seems to be misbehaving for you is the software voltage limit. The eVic is limited to 5V in VV mode. 5V on a 2.8ohm carto works out to 8.9W; in order to get 11W the eVic would need to set the voltage to 5.5V, but Joyetech have currently limited it to 5V. I hope that's the next thing they address, because this thing is useless for SR and HV atties.