First time I tried the update, just went the normal path: enroll, Fast track (only available option, anyway), update and... Bricked!
PC won't recognize the phone, reseting showed the operator and Nokia logos, but briefiely enough that PC could not see it.
So, I set it all (Lumia Recovery, plugged cable), set it to find the phone and then did a hard reset. This keeps the phone alive long enough so my PC could see it. PC downloaded the 8.1 firmware. Couldn't find the phone again. Did another hard reset and again it lived long enough for my PC to find it and Lumia Recovery took control of it, keeping the phone on and sending the firmware. It was ok again. Reinstalled Insider, just to get GDR2, and recovered my backup.
Tonight, I tried again, but this time I performed a hard reset first, and installed only the Insider app. Update worked fine and W10 was here.
The problem I'm facing now is that my Backup did not came complete. It's missing some apps, even some paid ones that now show app at the store as not purchased. This is not THAT bad, as apps are not that expensive, but still it's a bummer.
Enviado via Note 4