I am using a macbook and have disabled my antivirus and all other programs apart from Finder to open the firmware update software. I get this error continuously - specified drive in use. I have tried rebooting the computer and unplugging and replugging in the USB for my Passbook. I have looked for tips but only find PC related posts and have followed what I can. I have recently just had a hard-drive malfunction after my 1 year old drive gave-in. I have lost some data and corrupted some other data. I have salvaged what I can and put it on to a new 3T Pass Book for Mac. I have since reformatted the drive and am trying to update the firmware before adding files back to the drive.
Hope you can help. How can I ensure the drive is not in use before updating the firmware? I have checked my version 126.96.36.199 so obviously needs updating?