ROM Hack Question How come I can not play my animal crossing cart without updating when I could before?

[DaMegaTaco]

So I was hoping to play my ACNH on an earlier version so I could try using some of the hacked items that were patched out. I tried uninstalling the game, but when I tried to start it the game refused asking me to download an update refusing to start until I update it. I thought it probably had to do with the save data being from an updated version so I deleted that an I still could not start it. I was able to start it when I first got this unhatched switch, but now I can't. I am guessing that it logged in the memory there is an updated version and that is why it won't let me play it without updating. Is there any way to get around this? I really want to check out camo items and fragment trees just for fun, but unless I can start the game on an earlier version I can't.... Please help me figure this out

 

[burhansalih]

If your switch is using CFW use DBI from here https://github.com/rashevskyv/dbi/releases

it will allow you to remove the update warning and reset back to the last version. then when you start the software it won't warn you about needing an update.