iPhone backup
I just bought a new iPhone 12. I did not back up my old iphone 6s in quite a while because I didn't want to pay for more iCloud storage. I broke down and got more storage and am trying to back up the old phone but keep getting error message 14. Is there any way of saving the content of my old phone when given the only option of using RESTORE? I also tried deleting the .ipsw file and trying again - twice.
The old phone will not boot up now. It shows the diagram of hooking up to iTunes and says, "support.apple.com/iphone/restore"
iPhone 6s, iOS 12