Today i am goind to show you an interesting trick to spy someone whatsapp with some efforts.
It will take some time and effort but it is realy working.

• So first of all you will have to root access to your device.

(NOTE:If you haven't rooted your phone then GOOGLE about it OR comment your devices with FW version i will show you step by step process to root your device)

• Now you have to download terminal emulator.
• Open terminal emulator. You will have screen like command prompt on your device.
• 
  

Now a days flashing a firmware is easy as that was in past.

Today I am going to teach you How to flash a stock firmware on a smartphone very easily using PC with odin.

STEPS :

•  Download odin v3.07.

      Extract downloaded odin to the desktop.

•  Download firmware.zip 

      1. To download firmware.zip go to sammobile.com.

      2. Create account and log in using username and password

      3. Then click on FIRMWARE located in top line of home page.

  
    4.After that you will have page like this.

click on firmware database. 

     5.Then you will have a column like this.

       In first column select type of device. (smartphone/tablet/wear/tv)

       In second column select type of OS device have. (android/windows/bada/flyme)

       In third column select model of device you have.

       In fourth column select country.( Prefer to select TOP LATEST to get    latest  version of OS).

      6. After Downloading firmware.zip extract the file on your desktop. You will get a sinlge file in most case ending with .md5.

• Flashing the FIRMWARE.

       1.Run odin.

       2.Put phone in download mode.

       (NOTE: In most of samsung devices press POWER DOWN + HOME + POWER ON key together to put phone in download mode.)

       3. connect it with PC using USB cable.

       4. Odin will recognize the device and their will be a box turned into yellow showing com port of connected device.

       Like this.

        5. Now check twise that Re-partition option is NOT CHECKED and F.reset time and Auto reboot BOTH must be CHECKED.

        6.Now select on PDA and browse to the .md5 file of firmware you have downloaded and select it.

        7. Double check the selection mentioned in step 5 and if its of then press on START.

        8. Odin will start flashing. And when its done it will be a PASS message with in Green box will appear. It means your device has been successfully flashed.

           If it comes FAIL in red box then their must be something wrong while flashing.



Share if it helps you.