When trying to restore the Apple iPhone in iTunes for Windows, you get an error:
Unable to restore phone. Unknown error (6)
To resolve this problem, try the following steps.
- Open the following location depending on your operating system:
- Windows XP: C:\Documents and Settings\username\Application Data\Apple Computer\iTunes\iPhone Software Updates
- Windows 8, 7 & Vista: C:\Users\username\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates
- Delete all files that end with a .ipsw.
Now hopefully you can restore your iPhone without getting the Error 6 message.
If the above steps don’t work for you, some users have reported attempting to restore their iPhone from another computer worked for them. Others have stated that disabling their anti-virus and firewall software helped them.
Please share your experience in the comments section.