Interestingly enough.... I got a referb Bold directly from AT&T for my son that had this problem of not being able to see the USB. Not a case of a phone that was unbranded. This is a fresh referb. Sure enough, the batch file fixed the problem.
I understand the policy about posting the links. But have to say, this phone would have gone back to AT&T without the batch file fix. My son is very grateful.