So I updated from 15.x to 17 , my serial number is blanked out by tinfoil I assume(yes, I'll switch to dbi,I was just using tf because it wasn't breaking anything and it was fine for what i use it for). I saw this can be fixed using DNS, but people were saying a blanked serial number isn't needed? My Sysmmc isn't banned.
Also, since I'm only updating for my physical mario wonder , I can downgrade to 16.x right? Is there any disadvantage to doing so? I don't want to do the DNS stuff because it might break something in the future or cause issues so I keep my installs as clean as possible.