I have purchased a Factory Binary version of the S8's firmware which can be downloaded below
In order to flash this firmware you must have the original version of Odin which can be downloaded here
1. Extract the zip for the firmware
2. Open Odin
3. Click AP, and select extracted MD5 file
4. Uncheck Auto Reboot and F. Reset Time in Odin
5. Open Settings and enable Developer Options
(Settings-->About Phone-->Click Build Number 7 times)
6. Enable USB debugging
(Developer Options-->USB debugging-->Allow USB debugging)
7. Boot Device into download mode
(Volume Down + Bixby + Power)
8. Press start and wait for Pass
Phone will reboot into recovery mode. After it is done doing what it is doing in recovery mode the recovery menu will appear, select reboot device and you are done!
This firmware does NOT have Play Store or Play Service's installed and is considered to be a test build, you may experience crashes, device lag, etc
Apps must be installed via ADB until a dev or myself can install Play Store and Play Service's without crashes. Within this Firmware DM-Verity is disabled as well as Force Encrypt, according to my kitchen, SElinux status is set to permissive, and USB debugging is automatically enabled.
Hoping a dev or someone can find a way to achieve root or carrier switching, I am willing to test on my device and assist in any way possible, love to learn more about rooting, android development, etc.
Hope you all enjoy and remember flash at your own risk! Lets get this device rooted guys!!
Update 4/28/17: Achieved SElinux permissive on Stock Firmware