New Katana Code

Where do you mean the 'redeem code' on the launcher?

You need use CE

You need to use CE to change the codes to whatever weapon you want

my ce is 0 how to generate it

Everytime I use CE to hack blackshot , it Crashes and when I use Process hacker to suspend Its says Unable to suspend.. what to do?

Try with that: http://www.mpgh.net/forum/showthread.php?t=855351