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 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 :)