Where's my update?

[hessodreamy]

I'm on 2.2 my my desire (standard, original desire and unrooted) and recently, when connected via mobile internet, I got the notification of an update of OS available. I wanted to wait until I could get on wifi so I said not now, thanks.
However now I can't get the update. It doesn't happen automatically, or when I prompt the phone to check for updates.

Has the update been withdrawn? How do I get it?

 

[DCFC79]

Im still waiting to be notified of the update from my network provider (orange)