I just recently hacked my switch and realized that when I went to use the 90DNS method to block internet connection, I couldn’t set it up because I wasn’t already connected to a Wi-Fi. I was in airplane mode instead. I haven’t installed any games yet, only opened up the album to see what was in it. Could I connect to a Wi-Fi to set up the 90DNS without getting banned or can I just stick with airplane mode?
You can turn on exosphere and dns:mitm that are built in to Atmosphere for adequate protection straight out the gate.
https://rentry.org/ExosphereDNSMITM
After you do this you can reboot and if there are no issues, you can safely turn off Airplane mode.
If you want to add 90DNS on top you’re more than welcome to do so.