what is error code 78
iphone 6 stuck and cannot restart with home key, when trying to update using itune error code 78
iPhone 6, iOS 12
Hey there,
Learn what to do if you see an error code or alert when you use your computer to update or restore your device by following the instructions in this article ☞ If you see an error when you update or restore your iPhone, iPad, or iPod - Apple Support