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Help Problems while ugrading to JB, now Kies won't recognize

I started the JB Upgrade last night, let it run overnight. When I checked it this morning, it said it had encountered a problem, and to run Emergency Recovery. I tried doing that, but now it doesn't recognize my device. I took the battery out and restarted.

Now what can I do? I appreciate any help you can give me.
I assume you own a galaxy s2 from AT&T if so, remove the battery and put it back.
Enter download mode the usual way: with the phone off, hold down vol- (but not power) while plugging in the usb cable. Run Kies . Next click emergency firmaware recovery. Try to use a different usb port. If that doesn't work let me know.
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