You cannot revert back.You can find a tutorial using their app to register and download the patch, I'm sure you could edit the file though with how finicky this device is I'd use the patch as it's known to be reliable.
I spoke about how to remove the weather from statusbar in post #2982 and it appears to work perfectly.
I started my car after work and CC3 booted, since I've had it I don't think I've seen a reboot yet so that's not good it takes a long time if it this keeps happening I'll revert back to Vincent Vega firmware. Will see what happens tomorrow morning.
Sleep seems ok in 15/03 firmware so I am happy with it. If it is not sleeping try turning sleep mode off then on again in factory settings. Mine required this.