The Mig Flash or Mig Switch first appeared in February 2024, promising the ability to back-up and play Switch games without a modified console. US distributor MigFlashUnited claims the Mig Flash V2 now supports the unreleased Nintendo Switch 2, although details and any form of evidence remain absent.https://www.notebookcheck.net/Suspicious-looking-US-distributor-selling-backup-piracy-tool-Mig-Flash-claims-compatibility-with-the-unreleased-Nintendo-Switch-2.1014171.0.html
Given how it works, and that switch 2 is backwards compatible. It most likely will work on switch 2, for "Switch 1" games.