We're all on 0.8.58. For most of us, the problems didn't show up until a month after charging with no issues at all. We assumed it was the firmware, which changed to 0.8.58 around that time, but may it just be something internal wearing out over time? I have a replacement unit but haven't charged much since I got it, maybe 4 times and never longer than 1.75 hours, so the jury is still out for me on the replacement. But others have had their replacement fail after about the same time -- a month or so -- and they were on 0.8.58 charging just fine for that month until it failed with the same 3 red blinks. So please watch your charge rate and make sure it's not slipping to half charge after an hour. If it is, go look at the unit and you'll see the dreaded 3 red blinks, and get Tesla to replace it until they get it right.