And this is Microsoft's biggest problem - despite everything they've said about wanting to get "as many devices as possible onto 8.1" they seem to have made the mobile networks gatekeepers for the process and Vodafone doesn't seem to be co-operating.
Here's the screen shot from my Windows 8 phone;
It's very disappointing - I suspect both for me and Microsoft.
Needless to say "last checked about 6 months ago" isn't accurate!
Let's hope whatever the issue is that's preventing Microsoft and Vodafone rolling out the update to my Nokia 925 it gets resolved soon, but as Nokia/Microsoft are no longer selling the 925 I don't think I'll be holding my breath!