Since upgrading to 2.1, I am having difficulty with the Bluetooth connection to my Car (Fiat Blue & Me system). Most of the time it connects then drops after a few minutes, and sometimes won't connect at all. I have seen that quite a few Hero owners are having the same issue with other built in car systems, but so far, I haven't been able find a fix. I have contacted HTC and are waiting for a reply, but has anyone out there managed to get around this problem or is there anyway I can downgrade to 1.5 without rooting in the meantime? Thanks, Steve.