You'll just end up with a dz file that you can't do anything with. The dz file is encrypted by LG. There are tools out there for decrypting them, but they're written for other devices and may not work. I've tried a few and they haven't.
Basically what you can do is go through the process of resetting via KDZ and try to take the files out of the temporary directory before they disappear.
That's where my research into getting into the KDZ has led me.