One UI 2.5

[Vellious]

• I Just downgraded from the one UI 3.0 back to the UI 2.5. The problem is that it keeps sending me a message to upgrade to the 3.0 again. Is there anyway I can stop this. 

[Tallman]

I think after you restored back to OneUI 2.5, first thing to do is turn off WiF and data. Then go to Settings→ Software update, turn off Auto download over Wifi. That should not ask you to upgrade again if you don't check the upgrade manually.

You may have to restore once again.

[keagan]

Hi Vellious, Please note that Samsung always recommends keeping the device up to date to get a better experience.

[RedDogRabbit]

Congratulations, you have accomplished what Samsung moderators said couldn't be done lol.