Don't Install If You Haven't Prepared
Don't install the Android 8.0 Oreo beta on your Galaxy S8 or Galaxy S8+ if you haven't prepared for the beta.
You might be tempted to fire up the beta once the download appears, but that would be unwise. This is pre-release software and it could give you some major headaches if you aren't careful. Doing some prep work before you install will go a long way toward preventing these headaches.
We recommend checking in with IT (if you have an IT department) before you install the beta because it could have a negative impact on the software you use for your job.
We also recommend making a backup of your important files, just in case something goes wrong with the installation and your data.
You'll also want to update your apps, including first-party (Samsung) and third-party apps, with the latest updates. If you don't, they might not work properly with Android 8.0 Oreo.
Samsung recommends updating Samsung Pay, Samsung Internet, Samsung Notes, Email, and others.