What actual visual improvements should you see with the correct update applied?
.NSP = Nintendo Submission Package. A clean, digitally signed installable format (like eShop download). Contrast with .XCI (cartridge dump).
In scene culture, NSP implies: final fantasy pixel remaster switch nsp update high quality
Searching for NSP means the user intends to install to internal storage or SD card, not emulate (though Ryujinx/Yuzu also accept NSP). Update: The Pixel Remaster series has received patches