Can't Restore and Update iPhone 4

When I'm trying to restore, the restore bar on the iPhone goes until the very end and then iTunes gives me a message with the error code 3004. I tried it three times now, and for some reason it just can't restore my iPhone. The reason why it's trying to restore in the first place is because it "failed to back up" earlier, and it left my iPhone in recovery mode. Anyone got any ideas/suggestions/help? Thanks in advance.

Lol, actually kept trying and it eventually worked. But that wasn't the only thing I did. According to directions on the Apple error code support page, (if you have error code 3004), you should quit iTunes, and then go to Terminal and type this: dscacheutil -flushcache       So yeah, that's what I did, and I kept terminal open while trying it again, and my phone got restored and updated. Though I did here that one person's iPhone was updated but didn't have all the features of iOS 5, so I'll have to double check on my phone.

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    bbupdater:                     Ping failed, 4 tries left
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