While Cardfight!! Vanguard EX was released with an initial card pool covering the V-series up to September 19, 2019, it did receive a crucial stability patch. v1.0.2 .

If you are using custom firmware (CFW) to manage your library, you have a few ways to ensure your base XCI or NSP file is fully updated.

Getting the latest version of on your Nintendo Switch is essential for a smooth experience, especially since the game is known for having a final update that addresses several early launch bugs. Cardfight!! Vanguard EX: The Version 1.0.2 Update

The standard method is to download the separate .nsp update file (Ver 1.0.2) and install it using a manager like Tinfoil .