Hello. I REALY NEED HELP!! A couple of months ago when oreo got leaked for note 8 I installed it. I installed substratum themes before I did the update when I was still in 7.1.1 . When I installed the leaked oreo I had a problem that it wouldn't let me go past the lock screen unless I quick launched the camera and it said "system ui has stopped" and the phone kept vibrating. I couldn't turn off the phone.. only if I got lucky and then it would take me to a screen that said upload mode. no hard reset combo worked and only download mode combo worked. from there I would put cancel and it restarted the phone. somehow I got the phone to power off and immediately tried the hard reset combo and it worked. I factory reset it and everything went to normal. After that I never had the same issue again. But couple days ago I tried to install substratum to see if it would now work. WELL THAT WAS A HUGE MISTAKE. it was doing the same thing so I managed to factory reset it again. after that I didn't install substratum and everything would work fine until I woke up. when I woke up it kept doing the same thing so I wipped the cache and factory reset it again. Everything worked fine again and then the next morning IT DID THE SAME THING. I've factory reset it like 5 times now and don't have substratum installed at all and that doesn't work. it still says that "system ui has stoped" when I wake up in the mornings. I've been researching A LOT and I've tried to do everything the forums say but nothing works. HOW CAN I GET RID OF THIS SOFTWARE PROBLEM COPMLETLY?. (keep in mind i'm still on the beta software , I never got the official update). I even took it to a Samsung care center for a day and they told me that they couldn't fix it and I called Samsung and they said to ship it in to them so they could fix it. Have you guys been through this?