Tuesday, August 21, 2012

Unlock Samsung Galaxy SIII Bootloader

Found this XDA thread outlining the process and figured I'd write a quick tutorial on how to accomplish this without utilizing the one-click method (which requires Linux to function).  You'll need to be rooted for this method to work.

This is a two-step process:
  1. Download the unlocked bootloader
  2. Use either a terminal emulator or the Android Debug Bridge to flash the file.
First, you need to place the unlocked bootloader image onto your phone (aboot.img).  Where you place it will determine what the command you type points to.  Connect your phone using the USB cable and place the file either in:
  • sdcard
  • Internal Storage
If you're using the terminal emulator, open that up.  If you're using the Android Debug Bridge:
  1. Open the command prompt
  2. Enter the platform-tools directory (cd platform-tools)
  3. Type "adb devices" to initialize the Android Debug Bridge
  4. Type "adb shell" to activate the Android Terminal
In either terminal if you see the $ sign you'll need to type "su" to get the superuser prompt.  You'll know it's ready when you see the "#" sign.

If you placed the aboot.img file in the internal storage type:
  • dd if=/sdcard/aboot.img of=/dev/block/mmcblk0p5
If you placed the aboot.img file on the external SD Card type:
  • dd if=/external_sd/aboot.img of=/dev/block/mmcblk0p5
And a video tutorial to help you out: