I did a battery pull on the first install, because it hung for 20 minutes. Unchecked most things in Aroma, made it load the second time, half way through setting up the phone I realized I didnt install Mms. Why you need to check that in Aroma, I have no idea. Installed again, had the phone almost all the way set up, and it started to randomly reboot. I said #uc* it. Not sure if it was the Hboot, I'm using the Eng Hboot. Viper used to have a disclaimer saying you have to use the new Hboot instead.. If I really want to use a 4.1 ROM I just use Chubz's 4.1. It is exactly like Chubz's 4.1 but with a little bit better setting tweaks.