02-13-2009, 08:27 AM
Talking BlackBerry Encyclopedia
Join Date: Jan 2008
Location: Nova Scotia, Canada
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Try reinstalling DM 4.6.
Restart your PC.
After boot up, open up the device manager and expand the USB devices.
Plug in the Bold and watch for BlackBerry Smartphone (I think that's what it shows as) to appear.
If that does, use Blackberry Master Control Program to launch the loader.exe program. It should be able to detect the device even if it as USB:UNKNOWN; it should still work.
That has worked for me EVERYTIME I had the red light-only. If that doesn't work, I'd worry =)