Q: My iPhone 6 is in recovery mode after i downloaded IOS 9. When i connect it to iTunes, it wants me to restore to factory settings. after i agree , an alert with error 9 stopped the sync. the phone wont start

Hello Charlenwh,

Welcome to Apple Support Communities.

If I understand correctly, you saw an "unknown error 9" when attempting  to restore your iPhone 6 from recovery mode with iTunes. Try ruling out any issues that might be caused by security software or USB connections, as suggested in the article below.

Get help with iOS update and restore errors - Apple Support

Check your security software

Errors: 2, 4, 6, 9, 1611, 9006.

Sometimes security software can stop your device from communicating with either the Apple update server or with your device.

Check your security software and settings to make sure that they aren't blocking a connection to the Apple servers.

If you still see the error message, check for USB connection issues.

Ciao.