I'm not using emuNAND anymore because I found it slowed down load times, which lead to frame drops in certain games like Ori and the Will of Wisps. This was despite using a Sandisk Extreme micro SD card which should be lightning fast. But the problem with the brick code is solved anyway. Thank you for a more helpful response.emuNAND makes this a non issue anyway.
But Atmosphere doesn't allow writing to PRODINFO by default anymore, which was how the brickers worked.