According to the email announced by the official Gateway 3DS team, the Gateway 3DS will support Emunand update to V9.3 soon!! Since they are not so sure and still are testing whether V9.3 can be cracked or not, they inform that Gateway 3DS users do not update the Emunand version to V9.3. As for those people whose firmware version is between 4.5-9.2,  GW team will provide you the solution!