Unfortunately, I tripped it just today, after trying to use Clockwork Mid Recovery.
I will do what I can to replicate what I did. I have the means to get another N3, but it will take a couple months. I will record the whole process, from first opening to keeping 0x0.
I am not an attention seeker. I know I should have studied what I had while I had it. It's too late though. I must try again..... I will come back to this when I can.
If another reads this before they attempt modifying their device, and would like to try and keep 0x0, PM me. It would speed up the discovery