I had to wipe and start over from 4.7, then upgrade to .419 as peculiar things occurred, ie unable to make a phone call. What good is a phone that can't call out? Once I degraded to 4.7, I tested everything, then I upgraded, and it has been fine ever since.
Even battery life has been fantastic. I had to charge it once yesterday(Tuesday) since I took it off of charge on Friday night.