If you have the base game NSP and are attempting to apply an update (also known as an update NSP or Patch), follow these general steps using homebrew tools (assuming you have a modded Switch):
Note: NSP files are typically used for installing games on Switch consoles with custom firmware (CFW) or for region-free installations. Using NSP files for game installation outside of official channels can violate Nintendo's terms of service and potentially harm your device or compromise its security. FIFA 21 Legacy Edition Switch NSP -UPDATE-
If you're managing NSP files for FIFA 21: If you have the base game NSP and
With the rise of high-end Android handhelds (Odin 2, Steam Deck, ROG Ally), the NSP scene has migrated to PC emulation. Squad Fix: If the squads are outdated, you
As of early 2026, the search volume for "FIFA 21 Legacy Edition Switch NSP -UPDATE-" is high, leading to malicious actors.
Red Flags:
Safe Verification: Always check the release group (e.g., Venom, SUXXORS, or DeadD0g). A legitimate NSP will always be a .nsp or .xci file between 10GB and 15GB. Anything smaller than 1GB claiming to be the "Full Game" is malware.