This is a TWRP of Samsung Galaxy Grand 2 SM G7102 and it will allow you to flash custom firmwares onto the device. You will also be able to root the Galaxy Grand 2.
Here are the steps on how to do it.
1. Install Samsung USB drivers. Download Odin and my TWRP recovery.
2. Open Odin 3.07
3. Switch off and Go into download mode(Home+Vol down+ power).
4. Put the recovery.tar file in PDA.(leave other options as they are)
5. Start and let it flash. After pass you can boot into TWRP by Volume up + power + home.
That is it – you have successfully installed TWRP on your phone.