In this tutorial, we will tell you how to unbrick and restore your Samsung Galaxy Tab 3 7.0 tablet. This is only for the Wi-Fi version, SM-T210R (not the Sprint version, SM-T217S). This is very useful for those who tried flashing a custom ROM / CWM / root and something went bad in the middle and now they are left with a bricked Galaxy Tab 3 7.0.
Now enter download mode / odin mode on the tablet from a powered off state. For this, press and hold power, home, and volume down. you will see a warning screen then press volume up to continue.
Now, plug in USB cable to computer and device and let the drivers install give it 3 minutes run odin 3.07 and wait to see the com port connect. Click on the PDA button in odin and find the firmware file you extracted to your desktop and select it. Press start and wait for device to finish the flash and reboot.