Model: SM-G928F

Download / bootloader mode

Samsung phones don't usually have a boot mode. To get one you have to install twrp. Then you can access twrp using:

  power button (wait 1/2 a second), volume up button (wait 1/2 a second), home button

Download mode

  power button (wait 1/2 a second), volume down button (wait 1/2 a second), home button

Rooting

I tried CF Auto root and I got the red seandroid warning. If it refuses to boot after this or gets stuck on this message you can get the phone to reboot by pressing the download mode buttons. Root checker didn't show that it was rooted either. Knox was tripped. Oneclickroot seems to be a scam. In the end I got there by flashing twrp and magisk. Supersu didn't really always work for some reason.

Magisk

https://www.androidinfotech.com/root-samsung-galaxy-s6-edge-plus-sm-g928-nougat/

How to Root Samsung Galaxy S6 Edge Plus SM-G928? (International, Canada, T-Mobile, Sprint, US-Cellular, China, Korea)

Samsung Galaxy S6 Edge Plus International version comes with a flexible bootloader other than Verizon devices. Verizon devices come with locked Bootloader. This means that different smartphone variants can be easily rooted. Also, the device can accept to install TWRP recovery or any separate custom recovery file/app alike.

TWRP recovery is a custom recovery file which must be installed on Samsung Galaxy devices because you can root them successfully. In this article, we explained the easiest method to follow and install TWRP recovery on Samsung Galaxy S6 Edge Plus. However, the tool required for rooting this device is the Magisk App.

With the help of TWRP Recovery, you can quickly flash the latest version of Magisk into your S6 Edge Plus to gain root access. Before sharing the tutorial, you may want to know that, with the TWRP recovery present on your device, you can easily install any custom ROM or firmware. Does it seem complicated? Relax, everything will be explained succinctly in bullets. Things to check out for;

   Check your device model number.

   Select TWRP Based on the mobile model number.

   Make sure your device battery is charged above 50%

   Backup your current files and data, just in case (save them on external storage).

Pre-Requirement Steps

Enabling developer option

   Enable USB Debugging Mode and OEM Unlock in your mobile. To do this; go to settings >>> about >>> Tap on the “Build Number” 7-10 times consistently to enable “Developer Options,” then go to the “Developer Options” and enable USB Debugging Mode and OEM Unlock. There is no complicated process in the Samsung Galaxy S6 Edge Plus.

   Download and install the Samsung USB driver to your computer system.

   Also, download the ODIN software. Select above Oreo version in the ODIN list. Install ODIN in your PC.
   Download Magisk.Zip (Latest Version) and Copy it to Your Phone Memory.

   Download and save the TWRP File. Please select correct model number TWRP file.
   International Variants (SM-G928F, SM-G928FD, SM-G928I)

   Canada (SM-G928W8)

   T-Mobile (SM-G928T)

   Sprint (SM-G928P)

   US-Cellular (SM-G928R4)

   Korea (SM-G928K, SM-G928L, SM-G928S)

   China (SM-G9280, SM-G9287, SM-G9287C)

Flash TWRP using ODIN

S6 Edge Plus Download Mode

   Restart the device. Then, enter into Download mode. To do this; press and hold down the Volume Down + Home+ Power buttons at the same time for some time.

S6 Edge Plus Download Mode Warning message

   Press the Volume Up button to continue when you see the warning message.

   Now, connect the Samsung Galaxy S6 Edge Plus mobile to the computer via USB cable.

   Launch the Odin app on your computer. If the device is detected by this app (Odin), it will show you a message that reads – added!!!

ODIN Added Message

However, if the device is not correctly connected to the PC, you won’t see this message. So, you have to check the USB cable if it is reasonable and reconnect the device.

   After connecting the Samsung device, click on the PDA/PA button to browse/search and get the TWRP from where you saved it on your PC. Also, navigate to “options” and tick the Auto Reboot.

Odin Auto Reboot

   Click on “Start”

   Once the file is loaded into the device, reboot your device.

   Kudos, you have just Installed the TWRP on your Samsung Galaxy S6 Edge Plus. If you installed TWRP, Don’t turn on your mobile. Immediately, move to Magisk Installation steps.

Install Magisk in your Samsung Galaxy S6 Edge Plus using TWRP

   Boot it Into recovery mode->Volume Up+ Home +Power Button.

   Now it Will Boot into TWRP Recovery Mode.

   Select Wipe->Advance Wipe->Select Cache Data.

   Return to Home of TWRP select Install.

   Select Magisk.Zip.

   After the Installation Reboot Your Mobile.

   You can also install Magisk Manager in your Mobile Applications.

What More?

Samsung Galaxy S6 Edge Plus model is an old device. Even If you receive regular patch updates, Samsung keeps adding bloatware in those updates. If you use Lite weight Custom Roms, you can expect a considerable performance Improvement. So, If you have little knowledge in tech, I advise you to Root and uninstall some unwanted apps. You can also flash some Custom ROMs. If you flash Custom ROM, check what is working and what is not working. It is wise to use Some Official Custom ROMs like Lineage.

SuperSu

How To Root Samsung Galaxy S6 Edge Plus Android Smartphone

Step 1: To get started, take a complete backup of personal data on your smartphone using appropriate apps. We will use this backup to restore your personal data if your device gets corrupted during the rooting process.

Step 2: Next, download Samsung Galaxy S6 Edge Plus USB driver and install it in your computer. Only by installing the USB driver on your device, you will be able to connect the smartphone to computer.

Step 3: Now, enable “Developer Options” in your device by following this path: Settings -> About Phone -> Build Number (tap on it for 7 times). Once done, enable USB debugging mode by following this path: Settings -> Developer Options -> USB Debugging.

Enable USB Debugging Mode

Step 3b: Now, enable “Developer Options” in your device by following this path: Settings -> About Phone -> Build Number (tap on it for 7 times). Once done, enable USB debugging mode by following this path: Settings -> Developer Options -> OEM unlocking.

Enable OEM unlocking.

Step 4: Next, ensure that your device has at least 50-60% battery backup in it before getting started with the rooting procedure as it is a battery-consuming one.

Once you have finished all these prerequisites, you can move forward with the rooting tutorial given below. Tutorial To Flash TWRP Recovery In Samsung Galaxy S6 Edge Plus:

Step 1: To get started, download Odin and Samsung Galaxy S6 Edge Plus TWRP recovery image (twrp-3.1.1.1.img.tar) to your computer. Once downloaded, launch Odin window.

Step 2: Next, switch off your smartphone and boot into the download/bootloader mode by pressing and holding the Volume Down, Power and Home buttons simultaneously.

Download Bootloader Mode Samsung Smartphone

Step 3: Once your device boots into the download mode, connect it to your computer using the original USB data cable. If you have installed the USB drivers of Galaxy C7 in your computer properly, Odin will automatically identify your device, and you will see a “Added” message in its Logs. Also, the ID:COM will turn to “Blue” color.

Odin3 Added Message

Step 4: Now, click on the “AP” button in Odin window and select the twrp-2.8.7.0-j2lte.img.tar file.

Odin3 AP Button

Step 5: Next, click on the “Start” button to launch the flashing process (which will take a minute or two to get completed). Once the flashing process is finished, you will get a “PASS” message in the Odin. Your device will also get rebooted.

Odin3 Pass Message

Step 6: Now, unplug your smartphone from the computer.

That’s it. Now, you have successfully finished flashing TWRP recovery in Samsung Galaxy S6 Edge Plus smartphone. Let’s find out how you can root your device. Tutorial To Root Samsung Galaxy S6 Edge Plus:

Step 1: To get started, download SuperSU and save it in your computer. Once done, connect your smartphone to the computer using the original USB data cable and transfer the SuperSU file to its internal memory. After successfully transferring the file, unplug your device from the computer.

Step 2: Now, boot your device into the TWRP recovery by pressing and holding the Volume Up, Power and Home Buttons simultaneously.

Recovery Mode Keys Combination Samsung Smartphone

Step 3: Once your device boots into the TWRP recovery mode, click on “Install” and select the SuperSU file in your device’s internal memory to launch the flashing process.

Flash SuperSU Via TWRP In Nexus 5X

Step 4: Once the flashing process is finished, reboot your smartphone.

That’s it. Now you have successfully finished root Samsung Galaxy S6 Edge Plus Android smartphone. To confirm the root privileges of your smartphone, use the Root Checker for Android app from Google Play Store.

If it all goes wrong

If for some reason you get it all wrong it's easiest to take your phone back to stock firmware / rom.

How to Download Odin Firmware to Downgrade, Upgrade, or Restore your Samsung Galaxy

This gives you a link to SamFirm v0.3.6 which is a (windows) programme that will download the correct firmware. This can take a while, because the file is +-4GB large. After this has been downloaded it will be checked and decrypted (this can take a while) and then you have to unzip it yourself. Loading the file (under AP) in Odin will take quite some time and will give a timeout. Wait for it before you flash :)

After you have installed stock rom, you will have to reflash twrp