For those of you who want to return your Galaxy Note 10.1 for warranty or simply want to reload the factory firmware (because you didn’t make a backup ROM), here’s how to do it. This will put the factory ROM, recovery, and kernel back onto your Note 10.1. This works for all the Note 10.1 GT-N8000, GT-N8010, and GT-N8013 models, you just need to use the correct firmware for your model number.
Step 1. First, hold down Power and Volume Down buttons together until your Note 10.1 resets into Download warning screen.
Step 2. Hit Volume Up button to enter ODIN