Steps to do to change from dev to stable in samsung s9+

I have a samsung s9+ in dev 0.16 and wanna install the stable one. And when trying to adb sideload the stable the download 0.16 gives me error in twrp. What I am doing wrong?

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

Does that mean you plan to downgrade from 10 to 8? Best to double check and read the warnings.

damm. ok so stable is in 8 still??

Have you ever tried with a TWRP version 3.3.x-x ?

Yes, indeed. I have been alsousing the latest TWRP