Use the following guide
http://xdaforums.com/showthread.php?t=
But remember to backup your data to computer you will lose it all. Since OTA update doesn't work for you Odin will erase all your data like factory reset.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Sorry my bad
http://xdaforums.com/showthread.php?t=2663545
See post#2
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
ok thanks, but I have not found anything about how to upgrade from nb1 to nc1