Download and Install Lineage OS 19.1 for Samsung Galaxy S9 and S9 Plus (Android 12)

Samsung Galaxy S9 and S9 Plus (starlte/star2lte) launched in February 2018. The phone came out of the box with Android 8.0 Oreo. In this tutorial, we will...

Mohammed Huwais

Last updated on June 17, 2026

Mohammed Huwais

Author

I started my career as a blogger in 2014 and also worked on an Android niche platform to gain extra income. I cover the topic on How to guides, software updates, Custom ROM updates and also product review. I'm 24 years old, completed MBA (Master of Business Administration) from Sikkim Manipal University.

Android 12 and Its Features

Android 12 is all about improved personalization and revamped user interface that changes the way to bring more dynamic expression and a whole new design element. It’s a successor of the last-gen Android 11 which was basically focused on the privacy and security of the user data. While the Android 12 not only focused on privacy features but also on visual treatment.

Talking about the features, it has all new and colorful yet minimal widgets that are now more dynamic than ever before. While the dynamic theme with the wallpapers is more expressive as per your mood. The notification shade, lock screen, and its notifications, glance screen, volume controls, quick shortcut tiles, new power menu, transitions or animations, etc everything looks & feels great whatsoever with ‘Material You’ design.

Meanwhile, the impressive Privacy Dashboard feature, the privacy indicator on the top of the screen is also great. Whereas scrolling screenshot support, improved notifications, and quick reply feature, on-device search feature, easy Wi-Fi sharing, one-handed mode, quick back tap feature, haptic-coupled audio effect, Android 12 updates via Google Play, App hibernation, all-new emojis, improved auto-rotate, and a lot more.

How to Install Lineage OS 19.1 on Galaxy S9/ Plus

As the title suggests, here we’ve shared the requirements and steps to flash the Lineage OS 19.1 on the Samsung Galaxy S9 and S9 Plus variant.

Before heading over to the guide, make sure to follow all the requirements below.

Pre-Requisites

Before we begin with this procedure, I would strongly recommend you create a backup of your device storage and all your files stored on your device. Moreover, it is advised to follow the steps mentioned in this post very carefully to avoid permanent damage or to brick your device.

Charge Your Phone

It’s highly recommended to charge your handset before unlocking the bootloader to avoid your device from shutting down occasionally while going through the process. Make sure to keep at least 50% of charge or higher for a smooth operation.

Download ADB and Fastboot Binaries

You can skip this adb and fastboot part if you have already installed TWRP Recovery on your Samsung Galaxy S9 and S9 Plus.

Using the ADB and Fastboot command (platform-tools), you’ll be able to boot your Android device into the bootloader mode (download mode) which will be easy for you to proceed with further steps. ADB (Android Debug Bridge) creates a connection or bridge between the device and computer to sideload files.

Whereas Fastboot is a more advanced command utility tool for Android devices that works with computers. You can download ADB and Fastboot Binaries (Platform-Tools).

Download Samsung USB Drivers

A USB Driver is a set of files that basically allows you to create a successful and strong connection between a mobile device with a computer properly using a USB data cable. It’ll be useful to transfer files between the connected devices, flash files on the handset, and more.

It’s also worth mentioning that not only mobile devices but also other external devices can use and run USB Drivers on a Windows computer. Such as mouse, keyboard, printer, external hard drives, speakers, USB flash drives, etc. You can grab Samsung USB Drivers here.

Unlock Bootloader Your Phone:

To enjoy any custom ROM, you must first unlock the bootloader on your Samsung Galaxy S9 and S9 Plus.

Install TWRP Recovery:

You have to install TWRP Recovery on your phone to install any custom ROM on your device. After unlocking the bootloader, you can follow our guide to install TWRP Recovery on your Samsung Galaxy S9 and S9 Plus.

Download Lineage OS 19.1 ROM:

Here, you will find the Lineage OS 19.1 for Galaxy S9/ Plus.

Lineage OS 19.1

Download Link

Download Android 12 Gapps:

It’s worth mentioning that most of the third-party AOSP (Android Open Source Project) ROMs (also known as aftermarket firmware) come without any preinstalled Google apps package. You can manually install the Android 12 GApps by following our guide.

Warning!

GetDroidTips won’t be responsible for any kind of issue that may happen to your device if you flash it on another device and brick it. Do it at your own risk.

Instructions to Install:

Connect your device to the PC via USB cable. Make sure USB Debugging is enabled.
Then head over to the platform-tools folder, type in CMD in the address bar, and hit Enter. This will launch the Command Prompt.
Execute the below command in the CMD window or enter recovery mode by using the Volume and Power button combination. your device to TWRP Recovery:
```
adb reboot recovery
```
Now head over to the Install section and navigate to the downloaded vendor and firmware. Perform a right swipe to flash it.TWRP Home
If you want Google Apps as well, then you need to flash it at this instance itself. Go to Install, select the GApps ZIP file, and perform a right swipe to flash this file.
When that is done, you may reboot your device. Head over to Reboot and select System.

Your device will now boot to the newly installed OS. With this, we conclude the guide on how to install the Lineage OS 19.1 on Galaxy S9/ Plus. Do keep in mind that the first boot might take up some time and you might have to set up your device from scratch.