iphone 5 error -1 when restoring my iPhone 5.

Are you trying to downgrade the software of your iPhone?

Has the software on the phone been modified in the past?

If not, did you check your security software, to make sure that Apple servers can be reached during the restore process?

Troubleshooting security software issues

Error -1 usually indicates a hardware issue: Get help with iOS update and restore errors - Apple Support