[Samsung Galaxy S9+ Guides, News, & Discussion] SlackingVeteran:
Official Pie build for Galaxy S9+ Snapdragon (US only) is finally available. Pie build CSAB can be flashed using Odin or sideloaded from specific mentioned build(BRK2 for Now).

All the screenshots from the build available here: https://goo.gl/BH5qL3

CSC7 Build

Galaxy S9+ Snapdragon (SM-G965U and SM-G965U1):

Download link for Official build CSAG-to-CSC7:

https://drive.google.com/open?id=1SCfsmUZwjk9JxWn0zz5XM5nNfmdAbw5C
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CSAB Odin File

Galaxy S9+ Snapdragon (SM-G965U and SM-G965U1):

Download link for Official Odin File:

https://drive.google.com/file/d/1Paolz3vrM4UEtoPWkSQ99BLxsKaBzLUp/view?usp=drivesdk

Download link for Official build BRK2-to-CSAB:

https://drive.google.com/file/d/1JjBES3TXd7KKtsUbkZ7aawFqxpRJtZzm/view?usp=drivesdk

Galaxy S9 Snapdragon (SM-G960U and SM-G960U1):

Download link for Official Odin File:

https://drive.google.com/file/d/1Z-F9JhpQPp1Ip79geMAY4GU5XEIl5e3r/view?usp=drivesdk

Download link for Official build BRK2-to-CSAB:

https://drive.google.com/file/d/1zgttFTIa8TmmYrPYEmZLQRgGnuT9OJPM/view?usp=drivesdk
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Old Beta Builds

Build ZRJ7

Galaxy S9+ Snapdragon (SM-G965U and SM-G965U1):

Download link for beta build ARI6-to-ZRJ7:

https://mega.nz/#!9yRXFQCQ!KhROC09s5o3pEx6CxJ7AqJGgIsAC9YZU9yD47yYnlpM

Galaxy S9 Snapdragon (SM-G960U and SM-G960U1):

Download link for beta build ARI6-to-ZRJ7:

https://mega.nz/#!G6x0lQIa!9b20-g7AvOEP-q0wlzfjC50duPiVjsLYfw9djusCm6k​

Build ZRJ8

Galaxy S9+ Snapdragon (SM-G965U and SM-G965U1):

Download link for beta build BRJ5-to-ZRJ8:

https://mega.nz/#!ljBRiIbJ!hZ09WYPAwlrgRzx2Mrmh-K5gzNAlJGOmNblOnktuSYM

Changes from ZRJ7:

New nav gesture animation

Notifications in dark mode are dark

Bixby vision icon updated

Shortcuts in recent apps bunched up fixed

Lock screen widgets moved up

Duplicate screenshot bug fixed

Build ZRJ9

Galaxy S9+ Snapdragon (SM-G965U and SM-G965U1):

Download link for beta build BRJ5-to-ZRJ9:

https://mega.nz/#!ljBRiIbJ!hZ09WYPAwlrgRzx2Mrmh-K5gzNAlJGOmNblOnktuSYM

Galaxy S9 Snapdragon (SM-G960U and SM-G960U1):

Download link for beta build BRJ5-to-ZRJ9:

https://mega.nz/#!GmhEjC6T!xagNdHxf3R4Sbb7IkhtNgAQGwtT6gvrNAbKtLVT8AAs

Download link for build ARI6-to-BRJ5:

https://mega.nz/#!fugSTKJK!PABhPQlVUKuy8DYdRZsrWZG7L2dLeaR6wLxuvFv_GMA​

Build CRIB

Galaxy S9 Snapdragon (SM-G960U and SM-G960U1):

Download link for beta build BRJ5-to-CRIB:

https://mega.nz/#!HjhGWSBY!0AmThYz-cgJOuZrrsUAwADI1iyzGae8hjvO7bBET1-k

Galaxy S9+ Snapdragon (SM-G965U and SM-G965U1):

Download link for beta build BRJ5-to-CRIB:

https://mega.nz/#!tjRmhQ6K!vXISDohcDVe0pKZF6FdeVzrxzBBc1HH_YQh-pNKlDv4​

Download link for Odin3_v3.13.1:

https://goo.gl/qhuDcL

Here's a thread of what doesn't work in these builds. (Constantly updated):

https://xdaforums.com/galaxy-s9-plus/how-to/broken-features-current-android-pie-t3845763

Update file can only be sideloaded through ADB or installed from SD card from recovery menu. Install will fail if the current build version is not the same as mentioned above for each build

Disclaimer:

Install beta builds on you own risk. I shall not be responsible for any issues caused by the beta version of operating system.

Since the build is not final, it may not be good idea to use it as a daily driver because of various bugs, crashes and battery drain issues.