Had the bootloop issue 2 wks after warranty ran out. Read that it was loose connection on the motherboard. I read some craziness about placing the board in an oven. I had nothing to lose so I took phone apart at work and placed the motherboard on a piece of cardboard and set it in the 450 degree powder coat oven for about 15 mins. Since solder melts around 385 F it must have reflowed the solder and restored the connection. Put the phone back together and, I sh*t you not, it works. I assume a heat gun or home oven or toaster oven would suffice, as most people don't have access to a powder coat line. Anyway, feeling pretty good about it and thought I'd share. Attempt at your own risk.