Pull out the battery wait for >5 mins, power up, you should go back bootstrap recovery. rubix 1.6 and 1.0 is very different so you should wipe system/data/cache, mount system/data then install rubix 1.6 (I know the whole thing is not necessary but I do it just to be on safer side). You can always restore the user apps from previous backup using titanium.
I've pulled the battery for more than 5 min but it doesn't go into bootstrap. Am I doing it wrong?