I have old 3DS 4,5,0-10Е and using gateway since it was the only solution. All this time I've used same system SD card, but it gone bad all of a sudden. I've installed another one. Entered Gateway menu via blue card exploit. Formatted emunand and booted into gateway mode. With firmware GW3D 4,5,0-10Е OSD menu (when you push select in the main menu and open rom list) works okay. But after I'll update emunand to the latest firmware via wifi - no more USD menu for me. I've tried different versions of "launcher.dat", but no luck. OSD menu refuses to show in the updated emunand, only on the old one. Its a really big issude and I ran out of options of solving it myself.