Uknown error occurred (9). 060E.0000

Ive followed the steps to restore my phone. It says that my phones been restored but it keeps going back to the same thing where it tells me to visit the apple website to restore it. Ive restarted my computer, changed cables and nothing seems to work. Due to my power button being broken, I'm unable to force restart my phone. I don't know what else to try. Someone please help