Can't figure this out

Just downloaded the FW update, but now I can’t find my usb drive that’s connected to my router? Under content source, it shows window shares or linux shared. I click on the windows shares and it only lists my laptops as available shares, doesn’t list my USB drive that’s connected to my router. I can’t find where I can access the drive. Am I missing something?

… misread the issue.   thought you couldn’t see the USB drive to apply the update.

PRIOR to the update, how were you accessing the drive?  Through which method?  Network Share?  Media Server?