Hi there roshkrave
You may want to take a look the article below for som information on specific iTunes restore errors. The error 1161 is not listed, but 1611 is, just in case that was a typo.
This error typically occur when security software interferes with the restore and update process. FollowTroubleshooting security software issues to resolve this issue. In rare cases, this error may be a hardware issue. If the errors persist on another computer, the device may need service.
Hope that helps,