Backup settings and stuff via settings>back up> Samsung account, apps you will lose of you csc back to oreo..
but Google play will remember these skits just pictures and videos you need to backup to a PC if you can or even get cloud storage for your images and videos
Ah nuts, its taking an age to download the oreo firmware.
Use this samfirm tool instead, much faster
Ok ok so what happened to double press to open two apps or am I missing something here I know and understand it's a beta to test new features but why remove in my opinion one of Samsung best features the ability to be able to multitask if you ever needed to you could and now you just can't hmmm