Help with sysNAND

Hello everyone.

I have a 3DS on firmware 10.3. I'm waiting for Gateway to release their way to downgrade to 9.2 but I have a problem.
I know Nintendo blocked the online on firmwares less 10.4 so I wanted to know if there's a way to avoid that block on sysnand. I know there's a way installing .cia on emuNAND, but I'm still on sysNAND so idk what to do. I don't want to upgrade so if there's no way to avoid that block I will stay on 10.3 no matter what.

Thanks and sorry if I wrote something...

Help with sysNAND