TWRP Support Samsung Galaxy S9 S9 Plus
As we know that TWRP(Team Win Recovery Project) is a custom recovery which is used to flash custom ROMs on Android devices, to obtain root access and much more. This is the most famous and the most used custom recovery in the world of smartphone.
Now, the Samsung Galaxy S9 and S9+ have just gained the official support to TWRP recovery. But it has some limitations, It supports only Exynos 9810 powered Galaxy S9 and S9 Plus. The custom recovery is identified with the codename starlte for the Galaxy S9 and star2lte for the S9 Plus.
Users can download the official TWRP app for free on Play Store, or you can directly download the TWRP recovery mode for the two devices on the official website.
Flashing TWRP to your device can be risky and could void the warranty of your device. To flash TWRP you need to unlock the bootloader of your device.
TWRP for Samsung Galaxy S9 Exynos
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TWRP for Samsung Galaxy S9 Plus Exynos
click here to download
(source)