Download And Install AOSP Android 11 for Samsung Galaxy S9 and S9 Plus

Prerequisites

• Tested only on Samsung Galaxy S9/Plus (starlte/star2lte)
• First and foremost, create a complete device backup.
• Next time, enable USB Debugging on your Samsung Galaxy S9/Plus. This will make your device recognizable by your PC in ADB mode. So head over to Settings > About Phone > Tap on Build Number 7 times > Go back to Settings > System > Advanced > Developer Options > Enable USB Debugging.
  
• Your device also needs to have the bootloader unlocked. If you haven’t done so, then refer to our detailed guide on How To Unlock Bootloader On Samsung Galaxy S9/Plus.
• Next up, you will also need to install the TWRP Recovery on your device. This will be needed to flash the AOSP Android 11 on your Samsung Galaxy S9/Plus. You could refer to our comprehensive tutorial on how to Install TWRP Recovery For Samsung Galaxy S9/Plus.

Download AOSP Android 11

Before you download the firmware file, there is a pretty important worth mentioning. You should only use the proper vendor and firmware of your device of stable ROM.

Once you have downloaded the above files, transfer it to your device. Then proceed with the below steps to install AOSP Android 11 on your Samsung Galaxy S9/Plus (starlte/star2lte) device.

Install AOSP Android 11 on Samsung Galaxy S9/Plus (starlte/star2lte)

1. Connect your device to PC via USB cable. Make sure USB Debugging is enabled.
2. Then head over to the platform-tools folder, type in CMD in the address bar, and hit Enter. This will launch the Command Prompt.
   
3. Execute the below command in the CMD window to boot your device to TWRP Recovery:

   adb reboot recovery

4. Now head over to the wipe section and format system, data, and cache. Perform a right swipe to complete the format.
   

   

5. Its now time to flash the AOSP Android 11 ROM onto your Samsung Galaxy S9/Plus. For that, head over to Install, select the AOSP ROM ZIP file and perform a right swipe to install the file.
6. 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.
7. 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 AOSP Android 11 on Samsung 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.

Furthermore, once you have installed the ROM, do share your opinions about the same in the comments section. Rounding off, here are some iPhone Tips and Tricks, PC tips and tricks, and Android Tips and Trick that you should check out as well.