Well so u want to use GW on FW11.6 and Luma9, first you will need to downgrade your emunand... to do this find a CTRNAND 9.2(ctrnand is like a clean indenty nand) for your 3ds or n3ds region, flash it with GODMODE9 to your EMUNAND, now you have a 9.2 emunand and you can use GW.
for online mode...