Restore of iPhone 12 using iTunes
I backed up my iPhone 12 using iTunes. Then attempted to update the iOS to the latest version. The update failed and I had to take it in to have the phone reset to factory settings.
I then attempted to do a restore from iTunes which is now failing. I had 18GB free on my (Windows) pc. After attempting the restore, I have less than 1GB free.
How much is needed for a restore? How can I find the files/folder that used the 17gb?
How can I get my phone restored?