Are you on the latest firmware? There are also the possibilities that not all DLC are supported or the .NSP you used did not work. Just pray that Nintendo doesn't patch your bootrom in the meantime which is possible now that its in their hands. Read-only means they cannot make any software modifications, but they can certainly make any necessary hardware modifications as long as it doesn't affect the base functionality of the console. You cannot as those new Switches will prevent the SX OS menu from ever showing up in the first place, Pro or otherwise If the console is Japanese, the serial number for patched Switches start with this XAJX004XXXXXXX. For Western Switches, the serial number starts with XAWX006 Yes I haven't seen one yet that was able to run a payload with XAJ4004+. I know of one that wasn't. Regardless, this information is sparse and is still being actively collected. At this point, we do know that anything below XAJX004... are not patched. The proper serial number for patched units is not yet finalized and is based on preliminary findings.