I have a Lumia Icon. I've been on Release Preview ring for a while now and had 14393.1066 and it wouldn't update to the latest build. I read other people had to switch to Fast Ring to get 15063.2 and then switch back to get 15063.251. I was able to get 15063.2, but that's where I'm stuck. I switched back and every attempt fails and gives me 0x80070273 error code. It looks like it attempts to initialize the installation, but it always results in spitting back that error. I attempted a switching to both Slow Ring and Fast Ring, which try and install 15063.138, but it results in the same error. I've tried soft resetting and am trying to avoid a hard reset back to factory. Thoughts? Ideas? And yes, I know, it's an unsupported phone.