Same problem here.
- Nokia Lumia 920
- Canada
- Rogers (but carrier-unlocked, and I don't see any Rogers branding on start-up).
- RM-820_nam_canada_200
Soft reboots haven't helped, nor have hard-reboots (holding power+volume down).
I've tried downloading different language packs, restarting, no luck there either.
Settings > Phone update says "The update couldn't be completed. (80188308)"
(this is the same error code I got after the short "spinning gears" screen - "Can't update phone / It's probably a temporary problem. ... 0x80188308")
I've tried about four times, and am giving up for now. I hope you can figure it out soon, eager to see the new features. ;) (Ah, preview software...).
Thanks.