I tried to download the wp 8.1 developer preview like everyone else, but my phone failed. Got the bsod process1_initialization_failed. Tried rebooting, no luck. Tried disconnecting the battery, no luck. Now all it does is boot to the gears for about 30 seconds then turn back off. Everyone else is worried about their gears spinning for too long, and here I am with mine not spinning for long enough. I think I have a brick unless this had happened to someone else and they figured out a way to fix it.