The keyword "portable" extends beyond the Switch itself. Here’s where a fully updated NSP shines.
For the sake of completeness (and assuming you have legal backups), here is the workflow: fire emblem warriors switch rom nsp update dlc portable
Portable verdict: Acceptable – but Three Hopes runs better in handheld. Still, you can clear entire History Mode maps on a train commute without frustration. The keyword "portable" extends beyond the Switch itself