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If you install iOS4 on a mac with iTunes 9.2 (or with vmware) and activate it there, can you after activating it use it on a windows pc with the previous itunes and sync music, movies and apps and all as normal?

Basically; is activation AND usage limited to 9.2 only?

iOS4 will only sync with iTunes 9.2, so you must use that exclusively once the phone is on 4.0
 
Not working for me either!

UPDATE: Seems as though you get that error if you are downloading something in iTunes in the background. After my downloads finished it updated to iOS4 GM perfectly.
 
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