these directions from the thread on ...if youre having trouble..
http://xdaforums.com/showthread.php?t=714250
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If it does not show up at all, reboot the phone and try again, but do NOT let it boot back to Android. You can get back in to the bootloader by waiting until the 'HTC quietly brilliant' screen shows up and typing 'adb reboot bootloader' with the usb cable attached.
have reformatted sdcard with external card reader to fat32, copied liberated....zip onto the drive and inserted back into phone (while it was powered off)
each time the .... adb devices fails to see it and android loads it makes changes to the sdcard, inserting one or two directories
http://xdaforums.com/showthread.php?t=714250
***
If it does not show up at all, reboot the phone and try again, but do NOT let it boot back to Android. You can get back in to the bootloader by waiting until the 'HTC quietly brilliant' screen shows up and typing 'adb reboot bootloader' with the usb cable attached.
have reformatted sdcard with external card reader to fat32, copied liberated....zip onto the drive and inserted back into phone (while it was powered off)
each time the .... adb devices fails to see it and android loads it makes changes to the sdcard, inserting one or two directories