If you are seeking an "update NSP," you likely already own the base game (or a base NSP) and need the patch file separately.
Approximately 1.2 GB.
If you prefer to stay entirely within legal boundaries, follow these steps to purchase or update The Mummy Demastered on your Nintendo Switch. the mummy demastered switch nsp update eshop link
While the digital version is widely available, collectors may look for physical editions previously released through limited runs: The Mummy Demastered – Review – Source Gaming If you are seeking an "update NSP," you