How to unlock the Samsung S4 bootloader

samsung s4

 

A lot of people who have Samsung Galaxy S4 that is quite new now with amazing features and applications and would love to unlock it.

What unlocking a phone means is that some carriers lock the SUBSIDY or SIM lock so that only their SIMS will be operational in phones they sell. Basic theory is to keep you from getting a dirt cheap phone, and then going and activating with another carrier, and they are out the money that they lost “subsidizing” the price of the phone to entice you in as a customer. Also, keeps you from going to another country, using Prepaid SIMS and cutting them out of their ROAMING income.
But they won’t tell you that one! Some carriers, will give you the unlock code after you fulfill X amount of days (TMOBILE is 90 days) or are at the end of your contract. (ATT won’t if you were dying) You can also pay someone to UNLOCK it, or do it yourself, techniques vary by phone and manufacturer. Nowadays, it’s usually cheaper to pay someone to do a single phone, unless it has an unlock site/calculator available like most NOKIAs. Welcome to GSM. The carrier or network unlock tutorial can be found at How to unlock samsung galaxy S4.

This is what may be daunting to those who are not aware that the international version of the Galaxy S4 has already been cracked. The process for rooting Samsung is straight forward and should be done before unlocking the bootloader. However, precaution should be taken to avoid damages or bricking your phone. This is what can hinder you from enjoying your phone when it is destroyed by you during your unlocking. You can Install Android 4.3 on samsung galaxy s4 and proceed with the unlocking the bootloader tutorial below.

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You do not need to wipe or flash your phone’s full pre-rooted factory image. And this process can only work when you make use of a leaked-pre released kernel and a root method.  This is simple if you can follow the directions that have been made available.
Step 1 - Preparation

  • You should download and Install Samsung Official USB Drivers
  •  Extract ODIN v3.07 after download
  • The  VRUAMD2 Prerelease Kernel  should be downloaded too
  • VRUAMDK Stock Kernel have to be downloaded
  • Download and  then extract the Motochopper Root Exploit Tool

Step 2 - Flashing VRUAMD2 Prerelease Kernel to remove Root block

  •  You should boot phone into ODIN mode
  • Flash the VRUAMD2 Prerelease Kernel using ODIN v3.07 in PDA section only
  • You should boot back to Android and verifying everything is still working and kernel has flashed successfully

Step 3 - Rooting Your Device

  •  You should go into Settings > More > About phone > tap “Build number” about 7 times until it unlocks Developer options
  •  You should verify in Developer options setting on your device that you have “USB debugging” checked
  • You should verify in Developer options setting on your device that you have “Verify apps via USB” unchecked
  •  You should verify in Security setting on your device that you have “Unknown sources” checked
  •  You can verify in Security setting on your device that you have “Verify apps” unchecked
  •  You can then get your phone connected  to your computer and open “Run.bat” file from the location you have extracted motochopper to
  • You will see a message on the phone asking you to accept the new computer connection (select to always allow and select OK)
  • After motochopper runs and your phone reboots on its own, check if SuperSU has any update in the Play Store
  • You should open SuperSU app and let the binary update itself to the latest ***VERY IMPORTANT OR YOU WILL LOSE ROOT ON STEP 4***
  • Once complete, just open a root application and verify that is able to access root properly

Step 4 - Restoring VRUAMDK Stock Kernel

  •  You boot phone into ODIN mode
  •  You should flash the VRUAMDK Stock Kernel using ODIN v3.07 ***in PDA section only***(
  • You should  Boot back to Android and verifying everything is still working and kernel has flashed successfully
  • After your phone boots back to Android, you should now be fully rooted and on the fully original stock firmware as the device came

Post by Umair Masood, who writes his own technology blog at TodayonTech.com

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