I am upgrading our office's second Lumia Icon to the developer preview, and on both I am seeing a strange issue. The first update installed no problem, however the second one restarted the phone and then just shows the low battery icon or the low batter charging icon if I put it on the charger. Eventually the first Icon I updated yesterday did restart with the update installed, I'm hoping this second one does as well. It almost seems like it's updating, but instead of showing the gears, it's showing the low battery icon by mistake.
Anybody else had this issue?
EDIT: So I think this is caused by placing the phone on a wireless dock charging stand before it restarts to install the second update. I tried a wired charger and it kept turning on and showing me the low battery charging icon. I finally took it off the charger and held down power + volume down for 10 seconds and it restarted twice and finally got the installation gears animation and appears to be working now.