hello my friends.
can i change console region and dvdkey on a RGHed console then back it to stock whit patched nand?
No....
And No......
But you can with the RGH installed play any region games. That doesn't mean that if you remove the coolrunner that your 360 will always play any region games, it will revert back to normal.
It is the software that enables any region game to be played.
And why would you change a DVD key. You will retrieve the original key with the RGH anyway, so just flash that to a new drive and your good to go