Trying to reset iPhone 5s - error at no password in console
Trying to reset my very old iPhone 5s.
Forgot the last passcode.
Plugged into iMac.
iTunes says 'unable to connect to update server'
Tried advised console method to fix this issue.
My Mac has no password - in console, it asks for the account password - there isn't one.
When I hit enter it says 'incorrect password'
Need to get phone working for daughter.
Seems Apple doesn't like me using older kit.
Any fixes?
iMac 21.5″, macOS 10.13