How can I upgrade a note 8 to android 9 model N950U
I am having this issue too. Following.
I don't know why this happens but a friend added a ROM to his cell phone and added android 9.
But I do not recommend that as it could damage the device
I'd definitely wouldn't recommend adding a custom rom, for security and stability reasons. Did you try going to your settings and doing a software update? I just did it two weeks ago.. works just fine.