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SOLVED: How to Un-root Your Samsung Galaxy S6 and Restore Factory Android OS

If Samsung Galaxy S6 has been rooted and a non-factory operating system has been loaded you likely already know that there are problems:

  1. You voided your warranty
  2. You can not longer receive updates over-the-air from your provider
  3. The Samsung Galaxy might be unstable
  4. Your Galaxy might have a virus or other malware
  5. If you are trying to sell it, people often will not take it without a factory version of Android

The question then becomes, how to undo the rooting and reinstall the factory version of Android.  This is not the most obvious process but it is not difficult either:unroot-samsung-android-galaxy-s6

  1. Power down your Samsung Galaxy
  2. While holding down the VOLUME DOWN, HOME buttons, press the POWER button to start up your Galaxy
  3. After you see the WARNING notice press the VOLUME UP button to continue
  4. Connect your Windows PC using a USB cable
  5. On your Windows PC, download and unzip the factory Android OS from SamMobile
    1. Note that this site does make you register and it really makes it seem like you have to pay… but you do not
    2. In the search box at the top of the screen enter the BASEBAND VERSION number you need
      1. You can find the BASEBAND VERSION number by looking and someone else’s Samsung Galaxy S6 that is on the same provider as you and clicking SETTINGS > ABOUT DEVICE > SOFTWARE INFO
  6. On your Windows PC, download and install Samsung USB Drivers from HEREhow-to-unroot-your-samsung-galaxy-s6-odin
  7. On your Windows PC, download and unzip ODIN from HERE
  8. Right click on the ODIN executable and select RUN AS ADMINISTRATOR
  9. After ODIN Starts click the AP button and browse to the unzipped firmware (from step 5)
  10. After ODIN has done its MD5 verification (1 minute?), you can click the START button in ODIN
    1. Make sure there is a check mark in the box to the left of AP
  11. Wait for the firmware to be pushed to your S6 and then for the S6 to install it (5 mins?)

There are several other explanations of this process but I found THIS one to be the most useful.


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