Root Samsung Galaxy S9/ S9 Plus using Magisk (Snapdragon & Exynos)

This guide will show you how to Root Samsung Galaxy S9 Plus with the advanced rooting method Magisk. I have shown you two methods to Root this device, one with TWRP recovery and the second one without the necessity of TWRP.

If your device doesn’t support TWRP, then you can go with the second step. For this method, we will use the firmware stock boot image and patch it with Magisk.

With the help of this guide you can Root Galaxy S9 as well as Galaxy S9 Plus smartphone. So, don’t be confused.

Now let me tell you why we use Magisk over other rooting methods like SuperSU, Kingoroot, iRoot, and Dr.Fone. Magisk is a highly advanced way to root the android systemless-ly.

Samsung Galaxy S9 Plus

This means that Magisk root android without changing or modifying the system partition. Hence you can receive OTA updates, run apps that require to pass Google’s SafetyNet tests. Unlike other methods, you have to struggle a lot to install OTA updates, but with Magisk, you can easily receive updates without any issues.

Also, the best part about this method is that you can install Magisk on almost any android device running Android 4.2 to Android 10. This is the reason why we are using Magisk to Root Galaxy S9 Plus over other rooting methods.

About Samsung Galaxy S9 Plus

The Galaxy S9 Plus is the newly launched smartphone. It has some great features. Here is some Key Specification of Galaxy S9 Plus:

  • This phone comes with a 6.2 Inches Full HD+ 1440 x 2960 pixels Super AMOLED Display.
  • Galaxy S9 Plus is powered by the Snapdragon 845, which is an Octa-Core CPU.
  • It has 6 GB of RAM and 256 GB of Internal Storage.
  • Moving to the OS, this device runs on One UI on top of Android 10 (Q) upgradable.
  • Camera – It has a Dual Rear-facing Camera of 12 MP + 12 MP and 8 MP + 2 MP Dual Selfie camera.
  • Sensors – This phone supports Iris scanner, fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2 sensors.
  • Moving to the battery, it has a Non-removable Li-Ion 3500 mAh battery.

// Source: GSMArena

What Does Rooting Means?

Rooting your device simply means giving a superpower to your phone. Once you root your phone, you have full control of your Android Device. You can do everything you want to do with your Android System settings.

You can do the very greatest thing after rooting your device is installing Custom ROM, removing unwanted apps (bloatware), installing Modules, and much more. But before we Root, we must understand the Advantages and Disadvantages of Rooting your device.

Advantages of Rooting

Here are some Pros or Advantages of Rooting Galaxy S9 Plus

  • You can install Custom ROM on your device.
  • Update your Phone to a newer version of Android.
  • Easily install Incompatible Apps on your phone.
  • You can flash Custom Kernel to increase device performance.
  • Take Complete Backup of your Android using nandroid backup.

Disadvantages of Rooting

Here are some Cons or Disadvantages of Rooting Galaxy S9 Plus

  • The phone warranty will get void.
  • Galaxy S9 Plus will no longer Secure.
  • You may face lagging issues on Galaxy S9 Plus.
  • While Rooting, if you miss out on any steps, then your device might get bricked.

Pre-Requirements

Warning!
Apply the shown steps at your own risk, MyPhoneUpdate.com is not responsible for bricking your device.

Here is the list of supported model that can be Root using this guide.

Samsung Galaxy S9 –

  • Exynos variants (starlte): SM-G960F/FD/N/X.
  • Snapdragon variants (starqlte): SM-G960U/U1/W/0/2/8/SC.

Samsung Galaxy S9 Plus –

  • Exynos variants (star2lte): SM-G965F/FD/N/X.
  • Snapdragon variants (star2qlte): SM-G965U/U1/W/0/2/8/SC.

Let’s Root Galaxy S9 Plus (Beginners Friendly Guide)

If you are completely new to the rooting community, then don’t worry. We have included everything you need to know about the process of rooting android devices.

As I already mentioned above, this guide includes two types of methods, first by flashing the Magisk installer zip using TWRP recovery and the second method by flashing Magisk patched boot image using fastboot command.

So, let’s quickly jump to the process.

Note: Make sure to read this guide completely to avoid confusion or misunderstanding.

Method 1: Root Galaxy S9 Plus with TWRP Recovery

  • Download the Latest Magisk Zip file on your Galaxy S9 Plus device.
  • Move the downloaded zip file to your phone’s external storage.
  • Now, boot your phone into TWRP recovery mode.
    • Turn Off your phone.
    • Press and hold the Volume Up + Power button; as soon as you see the boot screen, release the Power button (do not release the volume up key until you boot into TWRP mode.)
  • Otherwise, you can also use the ADB command to boot into recovery mode.
    • Connect your phone to PC/Laptop
    • Open the command prompt on your PC and type the following command.
adb reboot recovery
    • This will boot Galaxy S9 Plus into recovery mode.
  • On TWRP main screen, Tap on ‘Install.’
  • Locate the Magisk installer zip file and Select it.

Install Magisk With TWRP Recovery

  • Finally, ‘Swipe the Slider’ on the bottom of the screen to flash the file and install Magisk on your phone.
  • Once the flashing process completes, Tap on “Reboot System.”

Now open the Magisk Manager app and check if you see all green checks on the screen. If you don’t see the app, you can install it from this link – Magisk Manager APK.

After successfully applying the above steps, will Root Galaxy S9 Plus without any issues. In case you are facing any problems in any steps, let me know in the comments.


Method 2: Root Galaxy S9 Plus without TWRP Recovery

Flashing Magisk Patched Boot Image using Fastboot

  • Next, tap on the “Select and Patch a File” option.
  • Locate the boot image file (e.g., boot.img) and Select it.
  • Magisk Manager will patch the boot image file with the latest version of Magisk.
  • Once done, the boot image gets patched. It will get saved in the ‘Download folder’ of your phone.
  • Copy the magisk_patched.img file to your PC and rename it to boot.img.
  • Now, convert boot.img to boot.tar file.
    • To do that, right-click on the boot.img file.
    • 7-Zip ZS → click on Add to archive.

convert boot.img to boot.tar

  • Select the Archive format to tar and hit OK.

boot-tar

  • Boot Galaxy S9 Plus into ODIN/Download mode.
    • Turn off your device.
    • You can do so by holding the Volume Down + Volume Up + Power keys simultaneously for a few seconds.
    • Release the keys when you get a screen with an exclamation sign.
    • Press the Volume Up button to enter the Download Mode.

Do these Steps on PC

  • Make sure to install Samsung USB drivers so that your phone gets recognized by your PC.
  • Now we have to flash the boot.tar file using ODIN for rooting.
  • Download the Odin flash tool and extract the file.
  • Run Odin.exe file.
  • Connect your Samsung device to the PC. You will see a blue sign in Odin.

Odin Device Added

  • Now, click on AP and select the boot.tar file.

Odin Select AP

  • Go to the Options tab and uncheck the “Auto Reboot” option.

Odin Uncheck Auto Reboot

  • Now, tap on the Start button to root your device.
  • The flashing process will take a few minutes, so be patient. Once done, you will see PASS on the top of Odin.

Odin Flash Completed PASS

  • Disconnect your Galaxy S9 Plus smartphone.
  • Magisk is now successfully flashed to your device! But there are still several steps before you use the device.
  • We now want to boot into the stock recovery to factory reset Galaxy S9 Plus.
    • Press Power + Volume Down to exit download mode, and as soon as the screen turns off, quickly press Volume Up + Power to boot to the recovery partition.
    • In the stock recovery menu, use volume buttons to navigate menus and the power button to select the option.
    • Select Wipe data/factory reset to wipe the data of the device.
    • Finally, select Reboot system now.
  • The first boot will take some time.
  • Congrats! You have successfully rooted your Galaxy S9 Plus with Magisk.

If you can not see Magisk Manager on your Galaxy S9 Plus phone, you need to install the APK manually. Here is the link to download the latest Magisk Manager APK.


How to Verify if your Galaxy S9 Plus is Rooted successfully?

  • Download the Magisk Manager app (if you haven’t already).
  • Open Magisk Manager app.
  • If you see all options with Green Tick, that means your phone has successfully got root privilege.

Verify Magisk Root

  • As you can see from the above screenshot.

Now, if you want to Unroot this device, it’s very simple and straightforward. You have to follow this guide – Unroot Galaxy S9 Plus


Conclusion –

So, this was the comprehensive guide on how to Root Galaxy S9 Plus smartphone. I have tried my best to make this guide as simple as possible. However, if you still encounter any problems while applying the steps, please let me know in the comments. I will try to resolve your issues as soon as possible.

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I am Milind Sahu, a Tech Blogger. I love helping peoples by providing solutions for the latest Android Bugs, Custom Roms, How to Root, TWRP Recovery, and much more!. At MyPhoneUpdate, one can find everything about Android.

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