Now, the only way to Install 9.0 Pie Oni Ui on Galaxy S9 Plus (G965U) or S9 (G960U) manually on your phone is through Odin. You will need a firmware file and then you can flash the firmware through odin on your phone. This requires a PC. Now some of you who are completely new to this may find it difficult at first, but if you follow these instructions carefully then you will successfully update your phone to the latest firmware. I have also published a tutorial to update Exynos Galaxy S9/S9 Plus to 9.0 Pie firmware which was very successful.
9.0 Pie One UI for Galaxy S9/S9 Plus Snapdragon
So, the Galaxy S9 and S9 Plus U models came with the snapdragon chipset onboard. People in US should have received the OTA update of One UI firmware. But users who are out side of US and have snapdragon variant of S9 or S9 plus may have not received the OTA update. So they need to follow this tutorial to update their phone to the latest firmware. One UI is an amazing overlay which replaced the previous Samsung Experience UI. And i can tell you that its is the best. The main goal of One UI was to using phones with big screen with one hand easily and it does exactly better than that.
Compatible Phone Models
This method is only compatible with Galaxy S9 having model no G960U or G960U1 and Galaxy S9 Plus having Model No G965U or G965U1. Don’t try this on any other variant of S9 or S9 plus because the firmware files here are not compatible with other variants.
Download Firmware Files
Below are the links to download 9.0 Pie One Ui firmware for S9 Plus G965U and S9 G960U. Download the firmware according to your phone model. Download: Galaxy S9 G960U/U1 9.0 Pie Download: Galaxy S9+ G965U/U1 9.0 Pie Download: Odin v3.13.1
How to Update Galaxy S9 G960U or S9 Plus G965U to 9.0 Pie One UI
Here are the steps to install the firmware on your phone. You can find the video of all these step at the bottom to better understand how to do the process. Note: The initial startup may take some time. If odin is stuck at any point, or says Fail then repeat process again. If you run into any problems then comment below. I hope you have updated your Galaxy S9 or S9 Plus U Model Snapdragon variant to the latest One UI firmware. Share it and subscribe. Thanks, Take Care.