How to update HTC Wildfire to froyo (android 2.2)? This is not duplicate of "When will my phone get the Android 2.2 update (FroYo)?" as I read there that official UK update was on 20 December 2010. I have phone in 3 and I cannot find any way to update.

If I enter into settings and try to do scheduled check it informs that phone is up to date. Firmware version is "2.1.-update1".

How to update to froyo
I expect the same way as any other update.

Menu | Settings | About phone | System updates

If it tells you that "Your system is currently up to date" then your carrier hasn't released the update for your phone yet. (They usually do staggered rollouts so as not to overload anything.)