Working method to root the LG G4S (Model H735 / "LG G4 Beat")

J

jen.magnolis

Member
Nov 6, 2015
36
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0
Berlin (Germany) and Sydney (Australia)
Nov 13, 2015 at 12:48 PM
Root your LG G4S (Model H735)

Tested on Andriod 5.1.1.
Thanks goes to @konsolen for sharing the method to open up the port (see appendix in this post) and to @dominik-p for his guide to determine dd parameters (you won't need this to root with the method described, but you can back up your phone if you're worried). And most importantly, thanks to the author of SuperSU for his excellent script updater-binary which worked pretty much out of the box, with only a few workarounds needed (which is what the instructions below do).

First, a few general notes:

  • The supersu.zip included in this package is version 2.46.
    SuperSU can be downloaded here: http://download.chainfire.eu/supersu
    If you want to use a new version, just put the zip file in this directory and rename it to "supersu.zip" (delete the old one in this package first of course).
  • The busybox binary in this package was used successfully to unzip in the LG G4s H735 (Android 5.1.1).
    Some time it should maybe be ensured that this is the newest version. Same holds for Send_Command.exe and adb.exe (and attached libraries).
  • This script uses the "update-binary" script of the SuperSU package to install it on your phone.
    The scripts I attached prepare for it to be called (hopefully) successfully.

Instructions to root

Preparation

You MAY want to create a backup of your system beforehand, in case things go wrong.
This is optional, so if you don't want to do this, you may still rely on the .kdz file (see Appendix below) to restore your phone if things go wrong.

You need to calculate the dd parameters and then backup your system partition into a .img file.
There is an excellent guide by @dominik-p for how to determine your individual dd parameters:
http://forum.xda-developers.com/g4/help/how-to-determine-dd-parameters-lg-g4-t3184867

Keep a copy of your system.img somewhere safe, you can use it to restore
your system if something goes wrong.

Enabling developer options and getting the tools

First, enable developer / debugging mode on your phone:
Navigate to Settings > About Phone > scroll to the bottom > tap Build number seven (7) times.
You'll get a short pop-up in the lower area of your display saying that you're now a developer.
Then, go back and now access the Developer options menu, check 'USB debugging' and click OK on the prompt.

Note: You have to enable USB debugging before plugging your device in to the computer. Unplug device then try to enable USB debugging.

On your computer, install Install and Use ADB (the Android Debug Bridge Utility). Also, download LG Flash Tool.
You can find out how to do both by searching google for it.

Step 1.

Connect your phone via USB (not in download mode yet, just normal).

Then, run Init_Root.bat in order to copy the essential files over to internal storage.
You may do this either by 1) double clicking the file, or 2) executing it from the windows command line.

For Option 2): Open a command line in the folder where you extracted this package. To do this, hold shift while right clicking in the folder opened in the Windows Explorer and select "Open command window here". Then, type
Init_Root.bat


Step 2.

Reboot your phone in download mode and ensure it has opened the port to send commands in download mode.
The port is open if it's displayed on the phone's screen in green letters, like
COMX
(with a number instead of X).

On my LG H735 it was necessary to use "LG Flash Tool 2014" http://lgflashtool.com/ to open the port. So if you don't have the green letters, see instruction pasted below (appendix) on how to open the port.

Step 3.

Open a command line in the folder where you extracted this package. To do this, hold shift while
right clicking in the folder opened in the Windows Explorer and select "Open command window here".

Open a command shell to your phone by typing (replace X with the number displayed on your phone) by typing:
Send_Command \\.\COMX

You should be set to root if the following works:
  • Typing "ls" returns a long list of file and folder names.
  • Typing "id" should give you someting like that:
    uid=0(root) gid=0(root) context=u:r:recovery:s0
    The important bits are the "(root)" uid and gid.
If any of the above is not the case, it will not work, you may search for help in the forum.

Step 4.

Execute the commands below (without the numbering of course).

1. mv /data/local/tmp/busybox /sbin/busybox
2. chmod 755 /sbin/busybox
3. mkdir /tmp
4. mkdir /tmp/supersu
5. /sbin/busybox unzip /data/local/tmp/supersu.zip -d /tmp/supersu
6. mv /data/local/tmp/supersu.zip /tmp/supersu/
7. sh /tmp/supersu/META-INF/com/google/android/update-binary dummy 1 /tmp/supersu/supersu.zip

(Note: Not all commands above may be needed, but this is the conservative approach)

Recommended:
Do sanity checks to see if it's doing its job as expected.
  • After command 2, type the command ls -l /sbin/busybox to check for sanity.
    It must return a line like this (with your own date and time):
    -rwxr-xr-x shell shell 1048328 <date> <time> busybox
  • Command 5 must print several lines containing "inflating" messages, similar to this:
    Archive:
    inflating: META-INF/MANIFEST.MF
    ...
  • Command 7 prints lines like this, and other status messages afterwards:
    **************
    SuperSU installer
    **************
    ...


Step 5.

Your phone should now be rooted if it all worked ok.

You may now type
LEAVE
to reboot your phone.

Happy rooting!


Troubleshooting

If it doesn't work, for example you phone may be stuck on the boot process displaying the LG logo, then you can use Flash Tool to restore your phone. Use instructions below (how to boot the phone into download mode), but don't pull the USB cable, and just let it run its course. This should restore your phone.

If for some reason this hasn't worked, you may try to "dd" back your system .img which you may have created in the preparation step.


Appendix
How to boot the phone into download mode and open the port

a) Boot the LG G4s in download mode. To do this, first switch it off completely and disconnect USB cable. Then, hold the Volume Up button, and while you keep holding it, plug in the USB cable.

b) Start the LG Flash tool and load the .kdz for your phone. We won't actually complete the flashing, you only need it to start the process, but you should use the kdz for your phone nonetheless.
You can check for your kdz on this link, pasting your IMEI instead of YOUR-IMEI in the link below.
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=YOUR-IMEI

I did not find any for mine there, but I did find it on
http://devtester.ro/projects/lg-firmwares/
Which brought me to this link where I could find mine:
http://pkg02.azure.gdms.lge.com/dn/downloader.dev?fileKey=FW703UV132GQAUP7A0ED99N/H73510c_00.kdz

c) Now this is very important: Watch your phone while the .kdz is being flashed by the flash tool.
(the flash tool may complain about error connecting to the update server, but you can ignore this with "ok").
As soon as the green letters show up, UNPLUG THE USB CABLE!
The percentage on your phone has to be 0% still (never mind about percentage in the flash tool, it may not even display it).
Then, kill the Flash Tool with the Windows Task Manager (Ctrl+alt+delete).
When it's closed, you can plug your phone back in.
It's now in download mode with open port.
 

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prosilu

New member
Oct 26, 2015
4
1
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Nov 15, 2015 at 8:47 AM
Hi

jen.magnolis said:
Root your LG G4S (Model H735)

Tested on Andriod 5.1.1.
Thanks goes to @konsolen for sharing the method to open up the port (see appendix in this post) and to @dominik-p for his guide to determine dd parameters (you won't need this to root with the method described, but you can back up your phone if you're worried). And most importantly, thanks to the author of SuperSU for his excellent script updater-binary which worked pretty much out of the box, with only a few workarounds needed (which is what the instructions below do).

First, a few general notes:

  • The supersu.zip included in this package is version 2.46.
    SuperSU can be downloaded here: http://download.chainfire.eu/supersu
    If you want to use a new version, just put the zip file in this directory and rename it to "supersu.zip" (delete the old one in this package first of course).
  • The busybox binary in this package was used successfully to unzip in the LG G4s H735 (Android 5.1.1).
    Some time it should maybe be ensured that this is the newest version. Same holds for Send_Command.exe and adb.exe (and attached libraries).
  • This script uses the "update-binary" script of the SuperSU package to install it on your phone.
    The scripts I attached prepare for it to be called (hopefully) successfully.

Instructions to root

Preparation

You MAY want to create a backup of your system beforehand, in case things go wrong.
This is optional, so if you don't want to do this, you may still rely on the .kdz file (see Appendix below) to restore your phone if things go wrong.

You need to calculate the dd parameters and then backup your system partition into a .img file.
There is an excellent guide by @dominik-p for how to determine your individual dd parameters:
http://forum.xda-developers.com/g4/help/how-to-determine-dd-parameters-lg-g4-t3184867

Keep a copy of your system.img somewhere safe, you can use it to restore
your system if something goes wrong.


Step 1.

Connect your phone via USB (not in download mode yet, just normal).

Then, run Init_Root.bat in order to copy the essential files over to internal storage.
You may do this either by 1) double clicking the file, or 2) executing it from the windows command line.

For Option 2): Open a command line in the folder where you extracted this package. To do this, hold shift while right clicking in the folder opened in the Windows Explorer and select "Open command window here". Then, type
Init_Root.bat


Step 2.

Reboot your phone in download mode and ensure it has opened the port to send commands in download mode.
The port is open if it's displayed on the phone's screen in green letters, like
COMX
(with a number instead of X).

On my LG H735 it was necessary to use "LG Flash Tool 2014" http://lgflashtool.com/ to open the port. So if you don't have the green letters, see instruction pasted below (appendix) on how to open the port.

Step 3.

Open a command line in the folder where you extracted this package. To do this, hold shift while
right clicking in the folder opened in the Windows Explorer and select "Open command window here".

Open a command shell to your phone by typing (replace X with the number displayed on your phone) by typing:
Send_Command \\.\COMX

You should be set to root if the following works:
  • Typing "ls" returns a long list of file and folder names.
  • Typing "id" should give you someting like that:
    uid=0(root) gid=0(root) context=u:r:recovery:s0
    The important bits are the "(root)" uid and gid.
If any of the above is not the case, it will not work, you may search for help in the forum.

Step 4.

Now you have two options:

#Step 4, Option 1 (recommended to try)
Just run the script and you should be done.

Type:
sh root_lgh735.sh

The script contains all commands I (and other people) used to successfully root the phone.
However we have all used option (2) below, so the script itself has not been tested yet,
though it's very simple (feel free to open it with a text editor to look at it).
You can try to run it, and if it's not doing what's expected you can still go to Option 2
and fix things up.

It will have worked if:
  • It prints several lines containing "inflating" messages, similar to this:
    Archive:
    inflating: META-INF/MANIFEST.MF
    ...
  • It prints 3 lines like this, and other status messages afterwards:
    **************
    SuperSU installer
    **************
    ....
If it has done that, reboot your phone and you should be set.
If not, do the commands manually as in Option 2.

Please: If the script worked for you, report it in this thread, so I can simplify these instructions here! Thanks for your help :cyclops:

#Step 4, Option 2:
Execute the commands directly (proven to work on several phones).

Type the commands below (without the numbering of course).

1. mv /data/local/tmp/busybox /sbin/busybox
2. chmod 755 /sbin/busybox
3. mkdir /tmp
4. mkdir /tmp/supersu
5. /sbin/busybox unzip /data/local/tmp/supersu.zip -d /tmp/supersu
6. mv /data/local/tmp/supersu.zip /tmp/supersu/
7. sh /tmp/supersu/META-INF/com/google/android/update-binary dummy 1 /tmp/supersu/supersu.zip

(Note: Not all commands above may be needed, but this is the conservative approach)

Recommended:
Do sanity checks to see if it's doing its job as expected.
  • After command 2, type the command ls -l /sbin/busybox to check for sanity.
    It must return a line like this (with your own date and time):
    -rwxr-xr-x shell shell 1048328 <date> <time> busybox
  • Command 5 must print several lines containing "inflating" messages, similar to this:
    Archive:
    inflating: META-INF/MANIFEST.MF
    ...
  • Command 7 prints lines like this, and other status messages afterwards:
    **************
    SuperSU installer
    **************
    ...


Step 5.

Your phone should now be rooted if it all worked ok.

You may now type
LEAVE
to reboot your phone.

Happy rooting!


Troubleshooting

If it doesn't work, for example you phone may be stuck on the boot process displaying the LG logo, then you can use Flash Tool to restore your phone. Use instructions below (how to boot the phone into download mode), but don't pull the USB cable, and just let it run its course. This should restore your phone.

If for some reason this hasn't worked, you may try to "dd" back your system .img which you may have created in the preparation step.


Appendix
How to boot the phone into download mode and open the port

a) Boot the LG G4s in download mode. To do this, first switch it off completely and disconnect USB cable. Then, hold the Volume Up button, and while you keep holding it, plug in the USB cable.

b) Start the LG Flash tool and load the .kdz for your phone. We won't actually complete the flashing, you only need it to start the process, but you should use the kdz for your phone nonetheless.
You can check for your kdz on this link, pasting your IMEI instead of YOUR-IMEI in the link below.
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=YOUR-IMEI

I did not find any for mine there, but I did find it on
http://devtester.ro/projects/lg-firmwares/
Which brought me to this link where I could find mine:
http://pkg02.azure.gdms.lge.com/dn/downloader.dev?fileKey=FW703UV132GQAUP7A0ED99N/H73510c_00.kdz

c) Now this is very important: Watch your phone while the .kdz is being flashed by the flash tool.
(the flash tool may complain about error connecting to the update server, but you can ignore this with "ok").
As soon as the green letters show up, UNPLUG THE USB CABLE!
The percentage on your phone has to be 0% still (never mind about percentage in the flash tool, it may not even display it).
Then, kill the Flash Tool with the Windows Task Manager (Ctrl+alt+delete).
When it's closed, you can plug your phone back in.
It's now in download mode with open port.
Click to expand...
Have twpr or cwm recovery to install xposed??
 
N

NayloSushi

New member
Dec 23, 2015
2
0
0
Dec 23, 2015 at 2:26 PM
Backup problems

Hello,

Coming from a Nexus 4, I bought a G4S last month.
I want to do my first root in order to manage the storage, like jen.magnolis talked about.

In case of a problem (bootloop or brick), I need to be able to restore. I don't really mind about restoring my datas, a factory reset would be enough.

But I don't undestand how i can get the system.img without being rooted ? It seems that I can get a "backup.ab" file using adb. Will it be enough to restore in case of brick ?
I also looked about kdz files, but mine doesn't seem to be available. I have a LGH735 (buyer = FRA, suffix = AFRATS, ...). Will it work if I use the one you provided in your post ?

Thanks for your help !
 
C

chw9999

Senior Member
Dec 29, 2006
388
78
0
Bensheim
Jan 9, 2016 at 2:31 PM
Excellent step-by-step guide. Should set an example for other "step-by-step guides" which exclude crucial information ("everybody knows lösfhgaeilurhg has to by typed between these steps here, I shall not mention it" ;))

Thanks a ton :) Worked on my LG G4S a.k.a H735 like a charm.

Cheers!
 
C

chw9999

Senior Member
Dec 29, 2006
388
78
0
Bensheim
Jan 9, 2016 at 9:06 PM
dreamnoob said:
anyone tried updating? just got a system update notification from my phone lol dk if i should update now or not
Click to expand...
jen.magnolis said:
Good question! I didn't try it yet. Think it should be ok, but if it isn't, you can just root again I guess ;)
Click to expand...
"phone appears to be rooted, will not be updated" - Hiding root did not help, any simple suggestions but total unrooting?

Wanted to upgrade from 10c to 10d...

Cheers!
 
A

ascfzz

New member
Jul 9, 2014
2
2
0
Jan 13, 2016 at 11:12 PM
Doubts.

Hi everyone!

I just cant find my .kdz file! The phone i want to root its a G4 H735AR, im wondering if there are some compatible .kdz that i can use. Im affraid it might get bricked or something...

BTW i¨ve tried the rootworm.bat method and it didnt work. And when i try to open the COMX port, the lg flash tool always crushes and shuts down.
 
Last edited:
A

ascfzz

New member
Jul 9, 2014
2
2
0
Jan 14, 2016 at 3:46 PM
Works!

ascfzz said:
Hi everyone!

I just cant find my .kdz file! The phone i want to root its a G4 H735AR, im wondering if there are some compatible .kdz that i can use. Im affraid it might get bricked or something...

BTW i¨ve tried the rootworm.bat method and it didnt work. And when i try to open the COMX port, the lg flash tool always crushes and shuts down.
Click to expand...
So, i made it! It works in the H735AR!! The problem with the flash tool was that i was trying to use it without any KDZ file!! I've used @konsolen .kdz and achieved to open ports, and then continue with the rest of the tutorial without trouble.

Thank you so much! Its a great phone, but with so little internal memory is a waste.

:D
 
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D

dreamnoob

Member
Sep 2, 2015
43
3
0
Jan 14, 2016 at 6:40 PM
chw9999 said:
"phone appears to be rooted, will not be updated" - Hiding root did not help, any simple suggestions but total unrooting?

Wanted to upgrade from 10c to 10d...

Cheers!
Click to expand...
ya u just update thru lg bridge.. once updated it will be unroot tho so u have to root it back same method as u did before.. and if you use link2sd it dosent matter after root ur link2sd can just reboot and re-read ur partition without needing to wipe and re-partition
 
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A

Androck6

Member
Oct 21, 2013
10
0
0
plus.google.com
Jan 18, 2016 at 1:42 PM
For people in Brazil that has H736P, to open ports, is necessary the kdz file to use in LG Flash Tool.

Galera do Brasil, consegui rootear o LG G4 Beat usando esse tutorial porém tive que baixar o arquivo kdz pro H736P pra executar o LG Flash Tool. Cuidado ao usar o LG Flash Tool, assim que aparecer a porta COM na tela do telefone, arranca o cabo USB do computador.

Enviado de meu LG-H736 usando Tapatalk
 
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