Currently, this is typically v1.4.1 . This update contains the actual data for many DLC items. Install DLC NSPs: Add your DLC files last.
Daemon X Machina received a massive "Ver. 1.4.0" update (and later a 1.5.0) that rebalanced the entire game, added new Colossal Immortals, and introduced the "Exploration Team" mode. If you have base game (Ver 1.0.0) installed via NSP, but you downloaded a DLC unlocker that expects Ver 1.4.0, the Switch will either: daemon x machina switch nsp update dlc fix
If you have attempted to install updates multiple times and failed, you may have "orphaned tickets" clogging your system. Currently, this is typically v1