A few minutes ago, I published an article on how to install TWRP recovery on Samsung Galaxy S7. If your device is Samsung Galaxy S7 and not Samsung Galaxy S7 Edge please use the guide provided in that article to install TWRP 3.0, not this.
Before using this guide to flash TWRP on your device, make sure it falls under one of the following supported models: SM-G935F, SM-G935FD, SM-G935X, SM-G935W8.
Installing TWRP On Galaxy S7 Edge
To make the installation of TWRP on your device easy and more convenient, two installation methods will be provided for rooted and non-rooted devices. So, read and follow each method carefully.
Method #1 (For Rooted Devices)
Step One: Make sure that your device falls within the supported devices list.
Step Two: Download twrp-3.0.0-0-hero2lte.img
Step Three: Copy the downloaded twrp-3.0.0-0-hero2lte.img file to the root of your sdcard (that is, /sdcard/), and rename to twrp.img.
Step Four: Download and install any Terminal Emulator app, then run the follow commands.
su
Now grant root access, and run this last command.
dd if=/sdcard/twrp.img of=/dev/block/platform/155a0000.ufs/by-name/RECOVERY
If you want to flash via adb on your PC, connect the device via USB cable and launch adb in Command prompt. Then key in these commands:
adb shell
su
dd if=/sdcard/twrp.img of=/dev/block/platform/155a0000.ufs/by-name/RECOVERY
Step Five: Done, and that’s all.
Alternatively, you can download and install the TWRP Manager app from the Play Store and flash TWRP recovery from the app.
Method #2 (Non-Rooted Devices)
Step One: Download Odin, and twrp-3.0.0-0-hero2lte.img.tar
Step Two: Power off the device and boot into download mode (press and hold Volume Down, Home, and Power buttons at the same time. Once the warning alert displays, press Volume Up to load the download mode)
Step Three: Extract and run Odin.
Step Four: Click on PDA/AP tab then browse and select the downloaded twrp-3.0.0-0-hero2lte.img.tar file.
Step Five: Click on Start and allow the flashing processing to complete. Done!
Note: Many devices will replace your custom recovery automatically during the first boot. To prevent this, boot the device into recovery mode first before booting normally into the system.
To boot into recovery mode, press and hold the Volume Up, Home, and Power buttons at the same time. Release the buttons once the recovery options are fully loaded on your screen.
That’s all.
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