These mods are only supported up to 1.2.0 so **they won't work on 1.2.1**. Some users think it would work on 1.2.1 and **it doesn't**. 

Find more info about these mods [here](https://www.reddit.com/user/ChucksFeedAndSeed/comments/14xksce/beta1_totk_dynamicfps_v155beta1_custom_internal/)

If you are looking for a DFPS mod that work on 1.2.1 use [UltraCam by MaxLastBreath](https://github.com/StevensND/switch-port-mods/tree/main/The%20Legend%20of%20Zelda%20Tears%20of%20the%20Kingdom/%5B0100F2C0115B6000%5D/1.2.1/Mods/MaxLastBreath%20UltraCam) instead.