I just updated to 2.0.1 on my 3G Iphone and I can no longer connect to my wifi network at home, it finds the network, I select it and then it says unable to join the network "home". Any fix for this?
Sometimes issues with devices happen simultaneous to updates. I'm not saying it isn't the update, but maybe you should reset your router. If you're still having issues, perhaps try restoring your phone.
Have you tried going into settings, general, reset, and reset network settings? you'll need to enter your wireless router's key again but that should work. Give it a try.