When Version 1.3.0 was released, it was distributed primarily as an NSP update. For users managing their libraries, applying this update meant "layering" the 1.3.0 NSP file over the existing base game (whether it was an XCI or NSP) to unlock the new features and DLC compatibility. Technical Improvements and Fixes
are essentially digital "cartridge" dumps. Historically, these were used to mimic the physical media of the Switch. Fire Emblem Engage Switch XCI/NSP Update 1.3....
The centerpiece of the 1.3.0 update was the integration of Wave 3 DLC. This brought two new sets of Emblems—powerful spirits of heroes from past titles—into the game. Players gained access to Chrom and Robin (from Fire Emblem Awakening) and Veronica (from Fire Emblem Heroes). These additions shifted the tactical landscape significantly, offering unique "Bond" abilities and "Engage" attacks that provided seasoned players with fresh strategic options for the game’s challenging Maddening difficulty mode. Digital File Formats: XCI and NSP When Version 1