[Root & Bootloader Unlock] Docomo Optimus G
Author : Dark Angel,
Category : LG,
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05-02-2014, 08:54 PM
(This post was last modified: 05-02-2014, 08:57 PM by Dark Angel.)
Exclusive: How To Root NTT Docomo's LG Optimus G
The Optimus G on Japan's Docomo network is an interesting device, as it ships with a mandatory access control system that basically prevents remounting system, reading boot, executing tasks with root privileges, and things of that nature. Thus, the root process for this version of the Optimus G was a tricky one.
A backdoor found by Android hacker giantpune will be used, which allows the bootloader to be unlocked, a modified boot.img to be flashed, and some security features to be disabled – ultimately allowing root access to be achieved.
Now that you have the basic idea down – a couple of noteworthy things:
Now that you have the basic idea down – a couple of noteworthy things:
~Graphical glitches will occur while in the bootloader. This means you will have to navigate the bootloader "blind."
~You need to download You are not allowed to view links. Register or Login to view. before you get started. You are not allowed to view links. Register or Login to view. (MD5: 70b93a8e8a29bfd2727ae3eb5984af10)
~If you're using a Windows machine, you'll need to grab the fastboot drivers You are not allowed to view links. Register or Login to view..
Disclaimer: Android Police isn't responsible for any harm to your device - proceed at your own risk.
Got it? OK, let's get started. Follow these instructions exactly!
First things first – extract all the files in the Docomo_OptimusG_Root-v1-AndroidPolice.zip package and open a terminal/command prompt in that location. Execute the following commands.
Now disable USB Debugging (in Settings > Developer Options), then re-enable it.
At this point, you should get an error about not executing /system/bin/sh – that's a good thing. If you didn't get the error, go back to the beginning and start over.
If you see your device, then you're good to continue. If not, you probably need to install the fastboot drivers you downloaded earlier.
After that, simply head into the Play Store and grab You are not allowed to view links. Register or Login to view.. That's it – you're done!
If, for some reason, your phone doesn't reconnect to the mobile network, reboot it several times. If that doesn't help, you'll have to re-flash stock firmware.
The Optimus G on Japan's Docomo network is an interesting device, as it ships with a mandatory access control system that basically prevents remounting system, reading boot, executing tasks with root privileges, and things of that nature. Thus, the root process for this version of the Optimus G was a tricky one.
A backdoor found by Android hacker giantpune will be used, which allows the bootloader to be unlocked, a modified boot.img to be flashed, and some security features to be disabled – ultimately allowing root access to be achieved.
Now that you have the basic idea down – a couple of noteworthy things:
Now that you have the basic idea down – a couple of noteworthy things:
~Graphical glitches will occur while in the bootloader. This means you will have to navigate the bootloader "blind."
~You need to download You are not allowed to view links. Register or Login to view. before you get started. You are not allowed to view links. Register or Login to view. (MD5: 70b93a8e8a29bfd2727ae3eb5984af10)
~If you're using a Windows machine, you'll need to grab the fastboot drivers You are not allowed to view links. Register or Login to view..
Disclaimer: Android Police isn't responsible for any harm to your device - proceed at your own risk.
Got it? OK, let's get started. Follow these instructions exactly!
First things first – extract all the files in the Docomo_OptimusG_Root-v1-AndroidPolice.zip package and open a terminal/command prompt in that location. Execute the following commands.
Quote:adb push lk.img /data/local/tmp/lk.img
adb push unlock.sh /data/local/tmp/unlock.sh
adb shell chmod 755 /data/local/tmp/unlock.sh
adb shell touch /sdcard/g_security
Now disable USB Debugging (in Settings > Developer Options), then re-enable it.
Quote:adb shell id
At this point, you should get an error about not executing /system/bin/sh – that's a good thing. If you didn't get the error, go back to the beginning and start over.
Quote:fastboot devices
If you see your device, then you're good to continue. If not, you probably need to install the fastboot drivers you downloaded earlier.
Quote:fastboot flash boot boot.img
fastboot reboot
adb shell /sbin/rootme.sh
After that, simply head into the Play Store and grab You are not allowed to view links. Register or Login to view.. That's it – you're done!
If, for some reason, your phone doesn't reconnect to the mobile network, reboot it several times. If that doesn't help, you'll have to re-flash stock firmware.
