All these folks saying GW definitely doesn't work on 9.3, what's your source? A few misguided posts on the temp don't cut it
Anyway to the people wondering if Ninjahax is Gateway's entry point, no it is not since GW have stated that the new exploit doesn't need a retail game or anything
This is their source: http://www.gateway-3ds.com/updating-sysnand-to-firmware-9-3-not-recommended/