"iPhone"could not be restored
hello, my iPhone 5S model A1533 can't restore by iTunes, only show logo itunes connect in screen, and not update, error: the iPhone , an unknown error occurred (2003)
Question marked as
A 2003 error does not appear in the iOS update error list, Get help with iOS update and restore errors - Apple Support
You can also see this, If you see the Connect to iTunes screen on your iPhone, iPad, or iPod touch - Apple Support
This support document also provides troubleshooting steps, If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support