ok i backed up NAND
copied NAND backup to my PC
put sd back in and formatted emunand
swapped CN for GW , it asked to update the red card,
red card update competed in N3ds
exited me back to GW menu
went to boot GW mode
it failed
reboot console
put in CN
launch QR scan exploit
it failed
reboot
launch CN exploit
failed again
reboot
launch CN exploit
worked
swap CN for GW red at GW menu
select boot GW mode
failed blue and grey horizontal lines ,hangs
reboot
launch CN exploit
it works
swap CN for GW red at GW menu
select boot GW mode
black screens , hangs , failed