Are you ready to change to way in which you use your Samsung Galaxy S9? If you are just tired of using the same Samsung UI, if you are dealing with software related issues or if you just want to customize and optimize the built-in Android system that runs on your phone, then you must start with the operation that’s detailed during the following guidelines. We’re about to see how TWRP recovery can be installed on the Galaxy S9, a dedicated tweaking procedure which will extend the access that you have within built-in features, apps, processes and to the overall Android functionality.
Thus, by setting up the TWRP recovery platform you will be able to better ‘communicate’ with the Android platform that is running on your Samsung Galaxy S9. Based on the additional tweaks that you will choose to perform you will afterwards be able to upgrade general performance, bump speeds, improve the battery life and change the Android functionality. That’s possible because with TWRP recovery you won’t have to deal with factory restrictions anymore – you will have full control over the Android OS, of course, everything from TWRP recovery.
TWRP recovery is therefore a custom recovery image that’s now compatible with the Samsung Galaxy S9 – only with the Exynos model by the way, so be careful. The custom recovery software is going to replace the stock recovery environment in order to add new tweaking possibilities – as you might know, from stock recovery you can initiate only official operations including things like manually flashing an OTA package, making a hard reset or clear app data cache. Anyhow, once the custom recovery image is added you can start applying different custom operations including: flash root exploits for granting root privileges on your Galaxy S9, add custom kernels and MODs, set up custom ROMs such as Lineage OS, AOKP or Paranoid Android, install apps from other sources than Google Play, overclock or undervolt CPU frequencies, you can make Nandroid backups for saving the current Android OS that runs on your handset and so much more.
Setting up TWRP recovery on your Samsung Galaxy S9 is not a supported operation by your OEM and it cannot be associated in any manner with Samsung. TWRP recovery is developed and offered by third party devs so completing the steps explained below will imply in assuming some risks – you are going to complete an unofficial process, so Samsung KNOX will get tripped; shortly, you might lose your phone’s warranty and even the access to certain built-in Samsung apps. By the way, the warranty flag can be restored but only if you choose to reinstall the stock Android OS on your device – then, your phone will be restored back to its initial state.
By the way, a backup is not optional because a hard reset must be completed during the TWRP recovery installation process. So, save the sensible data from your Samsung Galaxy S9 – you can do it by using Samsung’s cloud storage apps, by using an external storage device, by syncing files with your Google Account or by using dedicated and already tested backup and restore apps from Google Play. While doing that make sure that what’s essential for you is in safe hands: take care of stuffs like contacts, call logs, texts, images, videos, audio files, market apps, internet settings, calendar info, saved passwords, EFS folder, IMEI / NVRAM data and similar other packages.
A computer is needed as from there you will initiate the flashing process. The flashing program that will be used is Odin. This program is developed by Samsung so from this perspective you have nothing to worry about. By the way, on your PC the Galaxy S9 drivers must be installed first – you can get the right drivers for your phone by using Samsung KIES.
On your Galaxy S9 you need to access Developer Options, usually located under general Settings. If this field isn’t there go to About Phone and start tapping on Built Number – after 7 or 10 repeated taps you will notice the ‘you are a developer’ message displayed. Then, from Developer Options check the USB Debugging feature.
Charge your Samsung Galaxy S9 before setting up TWRP recovery. It’s important to do that if the power left is lower than 50%; if you don’t do it, your handset might get switched off in the middle of the installation process and then you can easily end up in soft-bricking your S9 – different malfunctions might get caused within the Android core system.
Do remember that this step by step guide is compatible only with the Exynos model of the Samsung Galaxy S9, so don’t follow the steps from below if you own another Android based device as you will only manage to mess things up.
How to Install TWRP Recovery On Samsung Galaxy S9
- First, on your computer download Odin; run the file that was downloaded and follow on screen prompts for setting up the flashing program.
- On desktop download and save the TWRP recovery file - from here. Also, download the DM Verity disabler from here and OEM unlock fix from here.
- Open Odin on your computer.
- In the meantime power off your Android based device and then reboot download mode on your Galaxy S9: press and hold the Power, Volume Down and Bixby buttons at the same time, for a short while.
- Connect your phone with your computer with the help of the USB cable. Once that’s ensured on Odin you should see the ‘added’ message displayed and the ID:COM field turned yellow or blue; if not, reinstall your phone’s drivers on your PC before repeating the steps from above.
- On Odin don’t select the Re Partition and Auto Reboot options and click on the AP option for loading the TWRP recovery package.
- Click on Start for initiating the flashing process.
- It will be done when the ‘pass’ message will be displayed; at that time the ID:COM field should be green.
- You can remove the USB cable now and reboot your phone into recovery mode: press and hold the Power and Volume Down buttons until your phone is switched off; then while still holding down Power button, press and hold the Volume Up key until recovery mode is reached (just switch from Volume Down to Volume Up).
- When asked to ‘allow for system modification’ make sure you choose Do Not Allow That and pick ‘Keep Read Only’.
- From recovery perform a full wipe on your Samsung Galaxy S9 – choose to apply these options: ‘wipe data factory reset’ followed by ‘wipe cache partition’ and by ‘wipe dalvik cache’.
- Afterwards, from your computer transfer the other two downloaded files and place them inside your handset.
- Finally, in TWRP recovery tap on Install and set up the DM Verity disabler and the OEM unlock fix packages.
- When done, go back to main menu of recovery and choose to return to Android mode.
- That’s all.
If Odin gets stuck while you try to set up TWRP recovery follow: close the flashing program and from Task Manager end its related processes; unplug the USB cable and disconnect your phone from your computer; reinstall your Galaxy S9 drivers on your PC; force-restart your Android based device; repeat the flashing steps from the beginning.
If your Galaxy S9 gets stuck in a boot loop during the last reboot, follow: go back to recovery mode and repeat the wiping process – choose to initiate a hard reset and to clear app data cache as already explained during the steps from above.
Good work. Hopefully now you can use TWRP recovery on your Samsung Galaxy S9 – you can use this tutorial for checking out different ways in which the custom recovery environment can be accessed and used on your smartphone.
So, that was all in terms of flashing a custom recovery image on your smartphone. Now, your device is ready to be rooted while you can anytime choose different other tweaks to apply for changing the way you normally use your Galaxy S9. Thus, for further and similar tutorials stay close and don’t forget to share how everything went for you and for your handset by using the comments field from below. Enjoy.