How to Install the Android 8.0 Oreo Beta on Your Galaxy Note 8
GadgetHacks has a detailed guide to downloading and installing the leaked Android beta for your Galaxy Note 8. Before you get started, you'll need to make sure you're using the U.S. version of the phone, which features a Snapdragon processor, not the international version that uses Samsung's own chip instead. You'll also need a microSD card and a file manager app like Solid Explorer .
The tech blog also notes that this beta does have a few bugs. For example, Samsung's Camera app may have trouble zooming, and you won't be able to use your Note 8 with the Gear VR headset. Battery life could take a hit, too, and some third-party apps might not work, either. So make sure to back up your phone in case you change your mind or need to do a factory reset.
If none of this phases you, it's time to get started. First, you'll need to
download Samsung's Nougat BQK2 firmware
and save it as a ZIP file on your phone's microSD card storage. Then, open your file manager app and confirm that it's saved there under the name "update.zip."
Next, power down your phone and boot it into Recovery Mode. To do this, press the power button, volume button and Bixby button all at once for a few seconds. The screen will turn blue and you'll see the Android mascot followed by an exclamation point inside a yellow triangle. At this point you can release the buttons.
Using the volume keys to navigate, select "Apple update from SD card" and confirm by pressing the power button. Then select the "update.zip" file using the same buttons. Once it's installed your phone will reboot automatically.
Now you need to install the Oreo firmware . Again, save it as a ZIP file on your microSD and confirm it's there using your file manager. It should show up with the name "BQK2 (N OS) to CQL1 (OREO).zip" but you can rename the file with a long press. Then, turn off the phone and boot it into recovery mode just like before.
When your Galaxy Note 8 turns back on, select "Apply update from SD card" using the volume and power buttons to navigate. Then select the Oreo file and it will begin to install. This should take about ten minutes, but once it's done and your phone reboots you're good to go.