Iphone 6 recovery/update error code "9"

What is error code "9", and how can I get my iPhone 6 to update or do a recovery? This problem started out as a locked "apple" which would not complete a reboot operation during power on. After connecting to iTunes, the phone now displays a connector pointing to itunes icon. itunes will not do an update or recovery ... it indicates that neither can be completed due to error code "9".