Iphone 3g not connecting to itunes?

I just updated itunes to the newest version. Iphone 3g was able to connect before update but now i can't. When i troubleshoot iphone device it says iphone won't work properly with usb 3.0. But it had worked before. I updated my drivers. Reboted iphone/computer. Updated everything. Still nothing.
Any suggestions to get iphone to sync again?

Mac or windows?

I would just downgrade back to a lower version of iTunes. It can easily be done using sites like icj.me or another that you google. The only advantage of the 11.x iTunes update was UI and iTunes Radio. Since your device doesn't support it, downgrade.

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