How To Flash / Unbrick Samsung Phones Using Odin Flash Tools -

These are the instructions to flash Samsung Stock ROM (original firmware) using Odin on Windows Computer.
Requirements: Your Samsung Smartphone should have at-least 30-40 percent of phone batter to perform the flashing process.

Flash Samsung Stock Rom using Odin

Step 1: Download and install Samsung USB Driver on your computer. In case you have already installed the Samsung USB Driver on your computer then Skip this step.
USB Driver Logo

Step 2: Download (Stock ROM compatible with your device) and extract it on your computer. After extracting you will be able to see these kind of files:
Samsung Galaxy Stock ROM

Step 3: Now, Enable USB Debugging on your Samsung Galaxy Device. To enable USB Debugging: Open Settings > Developers Option > USB Debugging > Tick to enable.
(Developers Option is hidden for Android 4.2.2 or above, to show the developer option Go to Settings > About Phone > Built Number (Tap on it for 5-8 times).

Step 3: Power Off your Samsung Device.

Step 4: Now, you have to boot into Download mode. To boot into Download Mode: Press and Hold Volume Down Key, Home Key and Power Key. When phone vibrates Leave the Power Key but Keep holding the Volume Down Key and Home key. You will boot into the Download Mode.
Download Mode on Samsung Galaxy

Step 5: In the Download mode you will be able to see a Warning Yellow Triangle Sign. In this situation you have to press the Volume up key to continue.

Step 6: Download and extract Odin on your computer. After extracting you will be able to see the following files:
Odin files for Samsung Galaxy

Step 7: Now, Open Odin3 and connect your phone to the computer.

Step 8: Once you have connected the phone to the computer, Odin will automatically recognize the device and show “Added” message at the lower-left panel.

Step 9: Once your device is detected by Odin, click on the “PDA” button and select the tar.md5 file that you have extracted in Step #2.

Step 10: Now, click on the “Start” button in Odin to begin the Flashing process.

Step 11: Once you see, the Green Pass Message then remove the USB cable from the device (during this process, your device will restart automatically).

Step 12: Your Samsung Device will now stuck at boot (boot loop). Now, You have to boot into Stock Recovery Mode, To Enable Stock Recovery mode: Press and Hold Volume UP key, Home Key, Power Key. When phone vibrates Leave the Power Key but Keep holding the Volume UP Key and Home key. You will boot into the Recovery Mode.

Step 13: In Recovery Mode, Wipe Data/factory reset.
Step 14: Once Cache Data is cleared, Select Restart Phone Now from the recovery menu.

Reboot System Now from Stock Recovery Mode

Step 15: Now, your Samsung Device will restart without any issue with the Stock Rom you have flashed. Open Odin3 for Samsung Galaxy

Keep in Mind:
[*] Data Loss Process: Flashing Stock ROM is always a data loss procedure. So, always take backup of your personal data before flashing the Stock ROM.
[*] Flashing Stock ROM or Downgrading Stock ROM does not void your Phone warranty. So, dont worry Just Flash the Stock ROM.