My sysNand is currently on 6.0.0-12U and I am trying to downgrade with the Gateway Downgrade function. I already backed up my nand on my computer and the nand.bin is also on the sd card. I have launcher.dat and the US gateway.dg (Which has the correct MD5) on my sd card also. When I go to go.gateway-3ds.com and choose downgrade your 3ds, it says, "Detected Region: USA Sorry, downgrading is not yet supported for your console." Does anyone know if I'm doing anything wrong? Or is firmware 6.0 not downgradable?