gambatte input

I’m currently trying to configure muOS on my Anbernic SP. I want to remove the Gambatte input for “next palette” and “previous palette,” but it doesn’t work. Whether I remove it with Start or Y. Where can I find the config file so I can set the input to nul?

Try removing the mapping from the remap file, and then save it as a Core Remap File.

Quick Menu > Controls > Port 1 Controls > Clear/change L/R Button mappings
Quick Menu > Controls > Manage Remap Files > Save Core Remap File

Unfortunately, I can’t delete the input. There’s still a button there. I’m looking for the config file to set it to “null” in the editor.