[Root & Bootloader Unlock] Docomo Optimus G

Search This thread

germes81m

Senior Member
Oct 4, 2010
198
27
www.paybox.me
I remembered u ask the NFC app, it is NFC Easy Connect https://play.google.com/store/apps/details?id=com.sony.easyconnect.
The app said my phone is enable with NFC. I tried with my friend S3 but it cant work. My mistake.

Yes its mistake, you check NFC with other apps like 'Do I have NFC?'
https://play.google.com/store/apps/details?id=com.obasiapps.utilities.doihavenfc

May be Sony Easy Connect not check NFC chip and simple try use it.

Sent from my L-01E using xda premium
 

mimicats

Member
Dec 30, 2012
27
1
hey guys this is my 1st time trying to root a cp and..its also the most safety device, can u post up by step root this device? im lost in it lol~thx
 

mimicats

Member
Dec 30, 2012
27
1
im jammed at the begin, explore all Root V1 and create cmd to excute dat 4 instructions... how to do dat :( help pls
 

mrmamon

Senior Member
Feb 24, 2008
57
12
Bangkok
I found some bug,

-sometime I can't turn on after turn the phone off have to pull battery out.
-take a long time to recharge and hot battery if charge while turn it off.
-poor gps performance(?) this one is the most annoying problem for me, can't lock even i'm standing middle a park with clear sky.

Sent from my L-01E using xda app-developers app
 

chadouming

Senior Member
Aug 27, 2009
2,208
1,982
On the interwebz
I found some bug,

-sometime I can't turn on after turn the phone off have to pull battery out.
-take a long time to recharge and hot battery if charge while turn it off.
-poor gps performance(?) this one is the most annoying problem for me, can't lock even i'm standing middle a park with clear sky.

Sent from my L-01E using xda app-developers app

Nothing to do with the purpose of this thread.
 

germes81m

Senior Member
Oct 4, 2010
198
27
www.paybox.me
I found some bug,

-sometime I can't turn on after turn the phone off have to pull battery out.
-take a long time to recharge and hot battery if charge while turn it off.
-poor gps performance(?) this one is the most annoying problem for me, can't lock even i'm standing middle a park with clear sky.

Sent from my L-01E using xda app-developers app

I have your problem 1 too. Sometimes I can't turn on device after turn off. If battery full discharged then I can't turn on it. Tried connect to charger then power button bu nothing. I will sell my device if I find other powerfull device with 4.7-4.9inches(not 5=<)

Sent from my L-01E using xda premium
 

Misudoll

Senior Member
May 17, 2012
142
23
Beijing
I found some bug,

-sometime I can't turn on after turn the phone off have to pull battery out.
-take a long time to recharge and hot battery if charge while turn it off.
-poor gps performance(?) this one is the most annoying problem for me, can't lock even i'm standing middle a park with clear sky.

Sent from my L-01E using xda app-developers app

for 1
is the temperature too high or too low ?
I've met this problem twice when I went to a really cold place
for 2
I use a 2A charger from ipad ,but have no idea if it's bad to the device...extremely hot while gaming and watching movie...
have no idea how to deal with it
for 3
you may try GPSstatus before use GPS app.open 3G4G and gps
after the GPS status download the A-GPS statistics,you will find the GPS works better

hope these can help u

Sent from my LG-F160L using xda premium
 

LNJ

Senior Member
Oct 7, 2007
3,169
806
Don't use a 2A charger. I think the LG one is 1.2A.
Don't exceed 10% of max current for prolonged period of time unless you want to damage your phone.

LG Optimus G E971/3/5
 

mrmamon

Senior Member
Feb 24, 2008
57
12
Bangkok
Ok, my only problem now is I cannot recharge if I turn it off. It will show black/white simple battery recharge animation instead of original color recharge animation and it just getting hot, without recharged or really slow recharge. anyone got the same problem?
 

germes81m

Senior Member
Oct 4, 2010
198
27
www.paybox.me
Ok, my only problem now is I cannot recharge if I turn it off. It will show black/white simple battery recharge animation instead of original color recharge animation and it just getting hot, without recharged or really slow recharge. anyone got the same problem?

I have too same problem with slow recharge, but recharge and I can wait:)

Sent from my L-01E using xda premium
 

Top Liked Posts

  • There are no posts matching your filters.
  • 14
    Original source: http://www.androidpolice.com/2013/01/21/exclusive-how-to-root-ntt-docomos-lg-optimus-g/

    Credits:
    adb backdoor: giantpune
    Duct tape guru: jcase
    bootloader: Team Codefire http://xdaforums.com/showthread.php?t=2001655
    Testers: Shados and germes81m

    Donations:
    For giantpune : Paypal to giantpune@gmail.com
    For jcase : http://xdaforums.com/donatetome.php?u=2376614

    Download: http://d-h.st/d6p

    Files: (Verify the MD5s before proceeding)
    MD5 (boot.img) = 175c1bdaabbbbcbd7a4b69a315057e5b
    MD5 (hotplug) = 9fbef20822281a2dd546b3e43d8c30dd
    MD5 (lk.img) = bc54a6a730658550713a0779b30bf6b7
    MD5 (unlock.sh) = 3871c2dde3d6b1d99d27ffa4021c81d3


    Fastboot Drivers (needed for windows):
    http://xdaforums.com/showthread.php?t=1996051

    Notice:
    This is an at your own risk kind of thing, if your phone becomes damaged or data lost, your
    fault not mine. This does install a unsecured (ro.secure=0) boot image in the process, this
    does potentially open your device to security risks (as do most customized firmwares.)


    Story:
    The Docomo Optimus G ships with a mandatory access control system, that prevents
    remounting system, reading boot, executing some things as root, etc general pain in the butt.

    We are using a backdoor found by giantpune (and later by Juggie). The backdoor is partially
    broken on this device due to the MAC, so it does not yield a root shell for us. However we
    can still use it with a couple extra steps to unlock the bootloader\s. We are also going to
    install a modified boot img, that removes some of the phone's security features, and allows
    us to actually have root access.

    Notes:
    Graphic glitches will occur while in the bootloader, you will have to use the bootloader 'blind'


    Follow directions exactly.

    Directions:


    Code:
    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

    Disable USB Debugging, then enable usb debugging

    Code:
    adb shell id

    Should recieve an error about not executing /system/bin/sh, this is what we want. If you
    don't have the error, start over.

    Code:
    adb push hotplug /proc/sys/kernel/hotplug

    Now toggle bluetooth once, and wait for your phone to display a garbaled screen (the bootloader).
    If it displays a blank screen instead of a garbled screen, pull battery, reboot and run 'adb reboot bootloader'

    Code:
    fastboot devices

    If you see your device listed, continue. If not then find the proper drivers, and then
    continue.

    Code:
    fastboot flash boot boot.img
    fastboot reboot
    adb shell /sbin/rootme.sh

    If your phone does not reconnect to your mobile network, try rebooting it serveral times.
    If it does not still, then reflash stock firmware.

    We are using supersu, and the app https://play.google.com/store/apps/details?id=eu.chainfire.supersu
    is needed.
    3
    It failed, Docomo used a MAC (ccs-init/ccs-audit). We got the bootloader unlocked yesterday, so we can removed the access control. I'll post details in the morning.

    What does logcat say?

    Try creating a minimalistic binary

    Code:
    #include <sys/types.h>
    #include <unistd.h>
    #include <stdio.h>
    #include <errno.h>
    #include <string.h>
    
    int main()
    {
      if(setuid(0)==-1)
      {
        printf("Failed Setting Root UID : %s",strerror(errno));
      }
      else
      {
        printf("Success!\nCurrent UID : %d",getuid());
      }
    
      return 0;
    }
    1
    use the lg flash tool and .tot file.uploading complete,you may download now and make a mirror if possible.I'll post a guide on our group later.
    still cannot find the kdz file of this device...

    ---------- Post added at 09:01 AM ---------- Previous post was at 08:41 AM ----------



    it's an amazing job indeed. we're really grateful for what you've done on rooting the L-01E.:good::good::good:
    do i have the permission to reprint this thread on other bbs in my country? I'll indicate the source of course.

    THX again for rooting L-01E:fingers-crossed:
    best regards.


    Repost as you wish, would be nice to have the README stay intact, as well as linking to the source.
    1
    so looks like I am one of the first to confirm JCASE and his friends Rooting Procedure... ITS WORKING!!!!!

    but please be informed that since I had problems installing fastboot on windows... i used my Fedora to be safe... but I believe once you are sure with your fastboot drivers..then you too will not have any problems

    I know I may look redundant..but I want to share what I did so that some people can follow because I myself had some issues...

    so here goes.

    * my system was fedora 18 32bit

    1. I searched for android on the fedora package manager
    - Android Platform Tools (adb,fastboot)
    2. Downloaded the files as per sir JCASE
    3. on terminal, I followed this Commands

    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

    4. Was kinda nervous about Disabling and Re-enabling USB DEBUGGING,

    so what I did is that I disconnected and reconnected my phone :)

    5. verified if my device is still seen by adb via this command

    adb devices

    6. once verified, then do this command

    adb shell id

    7. and I smiled when I had the error

    ---not executing /system/bin/sh

    8. next was this command

    adb push hotplug /proc/sys/kernel/hotplug

    9. Then I just Clicked the BLUETOOTH ICON in the STATUS BAR and then I did had the Screen Issue (and yup it is normal)

    10. CHecked if my device is connected via fastboot by this command

    fastboot devices

    11. Once my Device was seen, i followed these commands

    fastboot flash boot boot.img

    fastboot reboot

    12. after few seconds of reboot..I did this command


    adb shell /sbin/rootme.sh

    13. Then there was the note to install SuperSU

    14. After installation, I had some issues with network..so i restarted 2x

    15. And now I have Root, I just installed Cache Mate just to make sure and it worked


    Sorry Sir Jcase for being redundant

    anyway, this will not happen without the help of sir JCASW..so in behalf of all the L-01E Users, THANK YOU SO MUCH!!!!

    maybe this week..i will treat you with some coffee or beer.. hahahaha.. CHEERS!!!


    ***PLEASE TAKE NOTE THE COMMANDS from sir JCASE.. maybe due to my excitement, maybe i had some mixed up with the commands..

    again sir JCASE..thank you so much!!!
    1
    so at this step just click the bluetooth button once and that will do
    am I right dude ?
    congratulations you finally get the device root :D

    Sent from my LG-F160L using xda premium

    Yes toggle is turn off or on.