[LS997|VS995|H910|F800L] DirtySanta Bootloader unlock and Root guide

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me2151

Senior Member
Apr 12, 2012
2,186
4,480
Jacksonville, FL
10gjiht.jpg

This method will, when completed, will provide you with root and an unlocked bootloader, with fastboot available. It is a somewhat involved process, but the majority of the process has been simplified as much as possible.

WARNING!!!!This replaces your current bootloader with a debug bootloader. If you attempt to lock this bootloader you may brick your device.
Currently AT&T(H910) and Sprint(LS997) cannot return to stock because no KDZ files are available.

Disclaimer:
Once your phone is unlocked, it will no longer be covered by LG warranty @me2151.
As we cannot guarantee the proper operation of our hardware with custom software, we are not able to maintain the full scope of warranty for your device after you have unlocked the bootloader.
Because of that we have a responsibility to let you know that defects which may result from, or were caused by custom device-software may not be covered by LG warranty @me2151.

LG @me2151 can no longer guarantee the full functionality of your device after you unlock the bootloader. Unlocking your device may cause unexpected side effects that may include but are not limited to the following:
***Your device may stop working.
***Certain features and functionalities may be disabled.*
***Your device may become unsafe to the point of causing you harm.
***Your device becomes physically damaged due to overheating.
***The behavior of your device may be altered.
***Some content on your device may no longer be accessible or playable due to invalid DRM keys.*
***All your user data, settings, and accounts may disappear. (Therefore, we recommend that*you*backup all your data).
** -*Software updates delivered via LG FOTA (Firmware Over the Air) or Web Download services may not work on your device anymore.
LG @me2151 will not be responsible for the damages caused by any*custom software being flashed to your phone.

Known Issues:
AM&FM Radio no longer works
Boot time higher
No way to revert to stock(LS997/H910)
Possible overdose of root awesomeness!
Maybe more. Let us know!

Links:
- v20-root.zip
- TWRP
- Terminal Emulator
- Newest SuperSU(SuperSU v2.78 SR5 or greater is needed)
-Stock LS997 rom. for Sprint users only. (Fix's numerous problems)



Pre-requisites:
- ADB and fastboot setup and Installed
- Terminal Emulator installed onto the phone.
- The above links downloaded and SuperSU placed on the SD Card.

Working Devices:
- Verizon (VS995)
- Sprint (LS997)
- ATT (H910)
- Korean(F800L)
Note: International Variants (E.g.H990DS) May get supported in the future, but are currently being worked on at the moment. If you attempt to use this method on Unsupported Devices(any V20 not listed in working devices) then you are in uncharted territory. It will almost definitely brick your device. YOU HAVE BEEN WARNED!!!!

This will tutorial will be broken up into 2 sections, during the second section the instructions will differ depending on the variant of the phone you are using.


- Unlocking the Bootloader:

1) Copy all the files from inside the "Required Files" (Inside the unzipped "v20-root" folder) and paste it into your active ADB directory. Then copy and paste twrp-3.0.2-1-us996.img to your active ADB directory.

2) If you currently don't have Terminal Emulator then go and download and install now.

3) Plug your device into the computer and verify ADB is working. Then;

On Windows, double-click "RUNMEFIRST.bat, DO NOT CLOSE THE LOG WINDOW THAT OPENS, then double-click "Step1.bat"

On Linux/MacOS ("#" Signifies a comment below)
Code:
./RUNMEFIRST.sh
# OR
bash ./RUNMEFIRST.sh
Open a Separate Terminal next to the RUNMEFIRST terminal, then type:
Code:
./Step1.sh
# OR
bash ./Step1.sh
When you run The sh or Bat files there will be a Permission denied error on 2 files: Flatland and Flatland64. This is normal and nothing to worry about.
3.5) Wait for a shell prompt, then type (or copy):
Code:
run-as con
chmod 0777 /storage/emulated/0/*

4) Open Up Terminal Emulator
Type:
Code:
id
Check if context is "Untrusted_app"
t8WSPZw.png

If "Untrusted_app" is displayed, Continue:
Type into Terminal Emulator:
Code:
applypatch /system/bin/atd /storage/emulated/0/dirtysanta

If it doesn't show up as "Untrusted_app", repeat the above steps from Number 1

5) Watch the RUNMEFIRST dialog for when it tells you to run Step2. Then;

On Windows, double-click "Step2.bat"

On Linux/MacOS, type:
Code:
./Step2.sh
# OR
Bash ./Step2.sh

Once step 2 is completed, you'll be in bootloader, procced to "Flashing TWRP" section to continue.

Note/Warning: Verizon Users Vibrator will be constantly going off, until the whole process is complete (Past Android Setup Wizard).


- Flashing TWRP and Fixing Varient Issues:
1) Run Step3, so TWRP can be flashed and a working boot.img flashed (Fix's screen problem) by;

On Windows, double-click "Step3.bat"

On Linux/MacOS, type:
Code:
./Step3.sh
# OR
Bash ./Step3.sh
******Sidenote******
If you get message saying <waiting for device> on Step3.bat then you do not have the fastboot drivers installed(you may have the program but not the drivers).
To fix: Go to your device manager while the device is connected in fasboot and right click the item that says Android and select update drivers. Then select from internet. and let it install the drivers then try step3.bat again.
*************
2) After you're rebooted, and back at the main lockscreen, type;
Code:
adb reboot recovery

Your device will reboot to an LG screen. Keep checking adb devices for your device.
Then type:
Code:
adb reboot recovery
***********
Device should display a red triangle and say corrupt, then it will boot into TWRP.

3)Once in TWRP, Press Cancel on the password prompt and then swipe to allow system modifications.
Note:If you wish to make a back up now, you MUST save it to your SD card, and you cannot backup the data partition.
After the backup is complete, return to the main menu and hit wipe then select ?Format Data?, and follow the instructions there.

4) Steps below will differ, depending on what model you have, choose the correct model and follow its method.

- Verizon(VS995) and ATT(H910):
4.1) Flash SuperSU.zip
4.2) Go back to Main-menu > Wipe > [Format Data] > Type ?Yes?
4.3) Go back to Wipe > Advanced > Check Dalvik, Data and Cache > Slide to wipe
4.4) Go back to Main-menu > Reboot > System

- Sprint(LS997):
4.1) Go to Wipe > Advanced > Check Dalvik, System, Data and Cache > Slide to wipe
4.2) Go back to Wipe > [Format Data] > Type ?Yes?
4.3) Go back to Main menu > Install > LS997 Stock Rom then Flash SuperSU.zip
4.4) Go back to Main-menu > Reboot > System(you will get static on boot. this is normal)
4.5) Sprint users are Done at this point. You do not need anything else. Everything will work except static on boot.
Note:Any following Instructions are for all devices again.

5) During reboot you will get a Red Triangle with a "!" inside, this is normal (First boot after flashing SuperSu will show the Red triangle twice.Wait for system to boot (this will take awhile). It may appear like the system has frozen but it has not. JUST WAIT!
*****VERIZON USERS******
It has come to my attention that some users have encountered abnormally long first boot time(over 20 minutes before first time setup)
To resolve this issue:
Boot into bootloader by pulling the battery and reinserting it and holding VOL- and phugging in the phone. then typing:
Code:
fastboot flash boot bootbackup.img
fastboot reboot
**************
*****ALL USERS*****
If you encounter a "Secure Boot" Password then booting the first time you did not Format data properly.
To reiterate: To properly decrypt the device you need to boot into TWRP and go to WIPE->FORMAT DATA and you will be prompted to type "yes" to format and decrypt.
**************
Once you are booted and have proceeded through the setup wizard, re-enable Android Debugging (ADB) if not already enabled.
Type:
Code:
adb reboot bootloader

6) Once inside bootloader, Type:
Code:
fastboot flash boot bootbackup.img
When it says finished, Type:
Code:
fastboot reboot
The device will boot back into system.

WARNING:This is a required step for non sprint users, it prevents background crashes and fix's battery drain. If you do NOT follow this then the device will have bad battery life, be laggy and crashes will occur regularly.

7) Once full booted back into android, Type;
Code:
adb reboot recovery

8) Once TWRP loads, Then;
- Flash SuperSU.zip
- Go back to Wipe > Advanced > Check Dalvik and Cache > Slide to wipe
- Go back to Main-menu > Reboot > System

You now should have a rooted LG v20, download your favorite root checker app and verify root.
Note:For a root app to work, it will have to support Systemless root.


Contributers/Developers:
@me2151(General)
@glitschi667(General)
@EMSpilot(Debug device) #3
@elliwigy(Ideas and testing) #5
@Matt07211(Formatting this awesome guide and helping out with general stuffs)#4
@1619415(Awesome Santa Pic at the top!)#8
 
Last edited:

me2151

Senior Member
Apr 12, 2012
2,186
4,480
Jacksonville, FL
Alright guys. Its time for some fixes!!!
For our known issues:
Comfort view, youtube, boot time and possibly radio.
All fixed by flashing the AT&T H918 Konverged Kernel.

Keep in mind this is a temporary fix until I get a full custom kernel made for our devices(or at least a way to make the screen work out of box that we can use on other kernel sources).

To use this kernel on our phones you need to download the zip, Place on sd card, reboot to twrp, install the zip, wipe dalvik/cache then reboot.
You WILL GET STATIC ON EVERY REBOOT!
After the phone is booted put the screen to sleep by pressing the power button and cover your proximity sensor(so your 2nd screen turns off) then turn your screen back on. Your screen will work until reboot. If you reboot you will have the static again. Just follow the steps I just listed above to get the screen working again.
--------
Other Updates.
I believe I have finally found a way to revert sprint devices sprint devices to unrooted stock. I will be testing the method on my phone in the next couple days.

WooHoo!!!! I bricked attempting to revert!

So heres an update for you guys. Reverting has been confirmed possible using KDZ files for your specific models. Confirmed working for KDZs are H915, VS995 and some others. I do Have a new v20. I am going to pull the stock sprint files tomorrow and see what I can do about making that work.
 
Last edited:

SHABBA JOTS

Member
Aug 12, 2016
23
5
Toronto
So awesome to hear, you guys are amazing. Its possible the dev with the h915 is waiting for the firmware update (we're told in time for the holidays?!) that would enable LTE on wind to see if this still applies. Nevertheless, thanks, i dont remember the last time i read so much. Lol

Sent from my LG-H915 using Tapatalk
 

me2151

Senior Member
Apr 12, 2012
2,186
4,480
Jacksonville, FL
So awesome to hear, you guys are amazing. Its possible the dev with the h915 is waiting for the firmware update (we're told in time for the holidays?!) that would enable LTE on wind to see if this still applies. Nevertheless, thanks, i dont remember the last time i read so much. Lol

Sent from my LG-H915 using Tapatalk

From the last I hear from him. The bootloader unlocks and twrp installs BUT he has no service(he is Rogers) So he is looking into all that.
 
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Buzzy42

Senior Member
Jul 25, 2014
105
28
AWESOME job, everyone! Thanks so much for this-- I admit I may wait a little while for feedback before trying my own unit, but given that I jumped on the V20 early in hopes that if any version is hacked it'll be the earliest firmwares, I can't imagine it'll be too long before I'm back to enjoying my phone the way I like it!

Definitely will be sending some coffee money along, even though I wasn't in any of the bounties...
 
  • Like
Reactions: Sientz

Slypnslyde

Senior Member
Jan 5, 2013
2,192
478
Wilmington, DE
Damn I've been waiting for this soooo much but there's only thing. I don't now crap about LG phones I've been a Sammy fanboy for 7 years lol. Guess I'll have to wait till my boy can do it.

Sent from my LG-LS997 using Tapatalk

---------- Post added at 08:13 PM ---------- Previous post was at 08:06 PM ----------

Nicely done Guys.

@me2151(General)
@glitschi667(General)
@elliwigy(Ideas and testing)

I am extremely happy that the V20 User Debug I invested in worked out!

Enjoy everyone!!

Cheers
And thank you for purchasing that expensive out of pocket device.

Sent from my LG-LS997 using Tapatalk
 

elliwigy

Forum Moderator / Recognized Developer
Staff member
XDA App Taskforce
  • Damn I've been waiting for this soooo much but there's only thing. I don't now crap about LG phones I've been a Sammy fanboy for 7 years lol. Guess I'll have to wait till my boy can do it.

    Sent from my LG-LS997 using Tapatalk

    ---------- Post added at 08:13 PM ---------- Previous post was at 08:06 PM ----------


    And thank you for purchasing that expensive out of pocket device.

    to be honest theres nothing really lg specific besides the files themselves lol.. of course you never use Odin outside of Samsung lol..

    majority of it is pc bat or adb commands and then you got your typical twrp stuff but hey, best to have your buddy do it if youre not comfortable :)
     

    hoopsdavis

    Senior Member
    Sep 25, 2008
    1,385
    120
    Woodbridge, Va
    Hey guys I need a little help, last step I was able to complete was running "Step3.sh, after reboot I'm unable to get into recovery mode. does anyone know the manual steps to get to recovery mode?

    I also continue to get the popup "com.android.phone" has stopped.

    No mobile service
     
    Last edited:

    dc.wash95

    Senior Member
    Feb 24, 2012
    55
    9
    Hey guys I need a little help, last step I was able to complete was running "Step3.sh, after reboot I'm unable to get into recovery mode. does anyone know the manual steps to get to recovery mode?

    I'm assuming you're on Mac/Linux. If so, in terminal verify connection with "adb devices". If you're connected fine, enter "adb reboot recovery"
     

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    • 1
      First of all, using Windows and such browser are the probably the bigger issues, but whatever. I read through the first ~120 pages of this thread and I haven't seen anyone with the same problem, so it is most likely not a Trojan, furthermore, the only files that you are executing are the step (in your case) .bat executables, which you can freely inspect and modify for yourself and only contain a collection of adb and fastboot commands for your convenience. I would just try different mirrors on androidfilehost, since it is still possible that you have downloaded a corrupted copy, until you find one that isn't identified as a "Trojan", but at the end of the day it might just be miss-identified as a virus. Here is a mediafire link to the unzipped files, be sure to check the .bat executables regardless, since you never know and there was a miss-spelled 'boot1.img' in one of the .sh scripts and it softbricked my bootloader.
      Yes by definition it's a trojan. A 0day one. That's how we get root access. Thier is a cve and everything. It's just one that we have the source code for. That means we know it's not doing anything later what we want it to.
    • 176
      10gjiht.jpg

      This method will, when completed, will provide you with root and an unlocked bootloader, with fastboot available. It is a somewhat involved process, but the majority of the process has been simplified as much as possible.

      WARNING!!!!This replaces your current bootloader with a debug bootloader. If you attempt to lock this bootloader you may brick your device.
      Currently AT&T(H910) and Sprint(LS997) cannot return to stock because no KDZ files are available.

      Disclaimer:
      Once your phone is unlocked, it will no longer be covered by LG warranty @me2151.
      As we cannot guarantee the proper operation of our hardware with custom software, we are not able to maintain the full scope of warranty for your device after you have unlocked the bootloader.
      Because of that we have a responsibility to let you know that defects which may result from, or were caused by custom device-software may not be covered by LG warranty @me2151.

      LG @me2151 can no longer guarantee the full functionality of your device after you unlock the bootloader. Unlocking your device may cause unexpected side effects that may include but are not limited to the following:
      ***Your device may stop working.
      ***Certain features and functionalities may be disabled.*
      ***Your device may become unsafe to the point of causing you harm.
      ***Your device becomes physically damaged due to overheating.
      ***The behavior of your device may be altered.
      ***Some content on your device may no longer be accessible or playable due to invalid DRM keys.*
      ***All your user data, settings, and accounts may disappear. (Therefore, we recommend that*you*backup all your data).
      ** -*Software updates delivered via LG FOTA (Firmware Over the Air) or Web Download services may not work on your device anymore.
      LG @me2151 will not be responsible for the damages caused by any*custom software being flashed to your phone.

      Known Issues:
      AM&FM Radio no longer works
      Boot time higher
      No way to revert to stock(LS997/H910)
      Possible overdose of root awesomeness!
      Maybe more. Let us know!

      Links:
      - v20-root.zip
      - TWRP
      - Terminal Emulator
      - Newest SuperSU(SuperSU v2.78 SR5 or greater is needed)
      -Stock LS997 rom. for Sprint users only. (Fix's numerous problems)



      Pre-requisites:
      - ADB and fastboot setup and Installed
      - Terminal Emulator installed onto the phone.
      - The above links downloaded and SuperSU placed on the SD Card.

      Working Devices:
      - Verizon (VS995)
      - Sprint (LS997)
      - ATT (H910)
      - Korean(F800L)
      Note: International Variants (E.g.H990DS) May get supported in the future, but are currently being worked on at the moment. If you attempt to use this method on Unsupported Devices(any V20 not listed in working devices) then you are in uncharted territory. It will almost definitely brick your device. YOU HAVE BEEN WARNED!!!!

      This will tutorial will be broken up into 2 sections, during the second section the instructions will differ depending on the variant of the phone you are using.


      - Unlocking the Bootloader:

      1) Copy all the files from inside the "Required Files" (Inside the unzipped "v20-root" folder) and paste it into your active ADB directory. Then copy and paste twrp-3.0.2-1-us996.img to your active ADB directory.

      2) If you currently don't have Terminal Emulator then go and download and install now.

      3) Plug your device into the computer and verify ADB is working. Then;

      On Windows, double-click "RUNMEFIRST.bat, DO NOT CLOSE THE LOG WINDOW THAT OPENS, then double-click "Step1.bat"

      On Linux/MacOS ("#" Signifies a comment below)
      Code:
      ./RUNMEFIRST.sh
      # OR
      bash ./RUNMEFIRST.sh
      Open a Separate Terminal next to the RUNMEFIRST terminal, then type:
      Code:
      ./Step1.sh
      # OR
      bash ./Step1.sh
      When you run The sh or Bat files there will be a Permission denied error on 2 files: Flatland and Flatland64. This is normal and nothing to worry about.
      3.5) Wait for a shell prompt, then type (or copy):
      Code:
      run-as con
      chmod 0777 /storage/emulated/0/*

      4) Open Up Terminal Emulator
      Type:
      Code:
      id
      Check if context is "Untrusted_app"
      t8WSPZw.png

      If "Untrusted_app" is displayed, Continue:
      Type into Terminal Emulator:
      Code:
      applypatch /system/bin/atd /storage/emulated/0/dirtysanta

      If it doesn't show up as "Untrusted_app", repeat the above steps from Number 1

      5) Watch the RUNMEFIRST dialog for when it tells you to run Step2. Then;

      On Windows, double-click "Step2.bat"

      On Linux/MacOS, type:
      Code:
      ./Step2.sh
      # OR
      Bash ./Step2.sh

      Once step 2 is completed, you'll be in bootloader, procced to "Flashing TWRP" section to continue.

      Note/Warning: Verizon Users Vibrator will be constantly going off, until the whole process is complete (Past Android Setup Wizard).


      - Flashing TWRP and Fixing Varient Issues:
      1) Run Step3, so TWRP can be flashed and a working boot.img flashed (Fix's screen problem) by;

      On Windows, double-click "Step3.bat"

      On Linux/MacOS, type:
      Code:
      ./Step3.sh
      # OR
      Bash ./Step3.sh
      ******Sidenote******
      If you get message saying <waiting for device> on Step3.bat then you do not have the fastboot drivers installed(you may have the program but not the drivers).
      To fix: Go to your device manager while the device is connected in fasboot and right click the item that says Android and select update drivers. Then select from internet. and let it install the drivers then try step3.bat again.
      *************
      2) After you're rebooted, and back at the main lockscreen, type;
      Code:
      adb reboot recovery

      Your device will reboot to an LG screen. Keep checking adb devices for your device.
      Then type:
      Code:
      adb reboot recovery
      ***********
      Device should display a red triangle and say corrupt, then it will boot into TWRP.

      3)Once in TWRP, Press Cancel on the password prompt and then swipe to allow system modifications.
      Note:If you wish to make a back up now, you MUST save it to your SD card, and you cannot backup the data partition.
      After the backup is complete, return to the main menu and hit wipe then select ?Format Data?, and follow the instructions there.

      4) Steps below will differ, depending on what model you have, choose the correct model and follow its method.

      - Verizon(VS995) and ATT(H910):
      4.1) Flash SuperSU.zip
      4.2) Go back to Main-menu > Wipe > [Format Data] > Type ?Yes?
      4.3) Go back to Wipe > Advanced > Check Dalvik, Data and Cache > Slide to wipe
      4.4) Go back to Main-menu > Reboot > System

      - Sprint(LS997):
      4.1) Go to Wipe > Advanced > Check Dalvik, System, Data and Cache > Slide to wipe
      4.2) Go back to Wipe > [Format Data] > Type ?Yes?
      4.3) Go back to Main menu > Install > LS997 Stock Rom then Flash SuperSU.zip
      4.4) Go back to Main-menu > Reboot > System(you will get static on boot. this is normal)
      4.5) Sprint users are Done at this point. You do not need anything else. Everything will work except static on boot.
      Note:Any following Instructions are for all devices again.

      5) During reboot you will get a Red Triangle with a "!" inside, this is normal (First boot after flashing SuperSu will show the Red triangle twice.Wait for system to boot (this will take awhile). It may appear like the system has frozen but it has not. JUST WAIT!
      *****VERIZON USERS******
      It has come to my attention that some users have encountered abnormally long first boot time(over 20 minutes before first time setup)
      To resolve this issue:
      Boot into bootloader by pulling the battery and reinserting it and holding VOL- and phugging in the phone. then typing:
      Code:
      fastboot flash boot bootbackup.img
      fastboot reboot
      **************
      *****ALL USERS*****
      If you encounter a "Secure Boot" Password then booting the first time you did not Format data properly.
      To reiterate: To properly decrypt the device you need to boot into TWRP and go to WIPE->FORMAT DATA and you will be prompted to type "yes" to format and decrypt.
      **************
      Once you are booted and have proceeded through the setup wizard, re-enable Android Debugging (ADB) if not already enabled.
      Type:
      Code:
      adb reboot bootloader

      6) Once inside bootloader, Type:
      Code:
      fastboot flash boot bootbackup.img
      When it says finished, Type:
      Code:
      fastboot reboot
      The device will boot back into system.

      WARNING:This is a required step for non sprint users, it prevents background crashes and fix's battery drain. If you do NOT follow this then the device will have bad battery life, be laggy and crashes will occur regularly.

      7) Once full booted back into android, Type;
      Code:
      adb reboot recovery

      8) Once TWRP loads, Then;
      - Flash SuperSU.zip
      - Go back to Wipe > Advanced > Check Dalvik and Cache > Slide to wipe
      - Go back to Main-menu > Reboot > System

      You now should have a rooted LG v20, download your favorite root checker app and verify root.
      Note:For a root app to work, it will have to support Systemless root.


      Contributers/Developers:
      @me2151(General)
      @glitschi667(General)
      @EMSpilot(Debug device) #3
      @elliwigy(Ideas and testing) #5
      @Matt07211(Formatting this awesome guide and helping out with general stuffs)#4
      @1619415(Awesome Santa Pic at the top!)#8
      60
      Alright guys. Its time for some fixes!!!
      For our known issues:
      Comfort view, youtube, boot time and possibly radio.
      All fixed by flashing the AT&T H918 Konverged Kernel.

      Keep in mind this is a temporary fix until I get a full custom kernel made for our devices(or at least a way to make the screen work out of box that we can use on other kernel sources).

      To use this kernel on our phones you need to download the zip, Place on sd card, reboot to twrp, install the zip, wipe dalvik/cache then reboot.
      You WILL GET STATIC ON EVERY REBOOT!
      After the phone is booted put the screen to sleep by pressing the power button and cover your proximity sensor(so your 2nd screen turns off) then turn your screen back on. Your screen will work until reboot. If you reboot you will have the static again. Just follow the steps I just listed above to get the screen working again.
      --------
      Other Updates.
      I believe I have finally found a way to revert sprint devices sprint devices to unrooted stock. I will be testing the method on my phone in the next couple days.

      WooHoo!!!! I bricked attempting to revert!

      So heres an update for you guys. Reverting has been confirmed possible using KDZ files for your specific models. Confirmed working for KDZs are H915, VS995 and some others. I do Have a new v20. I am going to pull the stock sprint files tomorrow and see what I can do about making that work.
      39
      Nicely done Guys.

      @me2151(General)
      @glitschi667(General)
      @elliwigy(Ideas and testing)
      @Matt07211(Formatting this awesome guide and helping out with general stuffs)
      @1619415(Awesome Santa Pic at the top!)

      I am extremely happy that the V20 User Debug I invested in worked out!

      Enjoy everyone!!

      Cheers
      18
      It looks like quite a few people are getting confused about the steps they need to take, so I wrote up the steps I took to get my device rooted. @me2151 - if you want to add it to the OP, feel free to do so! I'm not trying to take anything away from the original instructions, but I decided to just type up the steps I took to try and make things easier for people.

      These instructions are for Windows users and are specific to the Sprint model (LS997). Others can follow them if they want, up to the point where I refer them back to the OP for other variants' instructions:

      1. Download and install ADB and fastboot and add them to your path (see here for instructions) then reboot the PC so the changes go into effect (and to refresh your system, because it is Windows after all ;))
      2. Download and install the LG USB drivers (do not connect the phone to the PC until after this is done!!)
      3. Download all of the files from the OP and put them somewhere easy, for the purposes of this tutorial, I will use C:\android
      4. Extract the contents of v20-root.zip to the base of your working directory but do not extract the other zip's!
      5. Install a terminal emulator onto your phone from the Play Store (see the OP for a great one to use).
      6. If you haven't already, enable Developer Mode on the phone (search to figure out how) and make sure that USB debugging is enabled.
      7. Reboot your phone for safe measure!
      8. After the phone is rebooted, connect it to the PC and wait for the drivers to finish installing...
      9. IMPORTANT: Browse to your phone via Windows Explorer, open the EXTERNAL SD Card and copy both LS997-deODEXd-signed.zip and SuperSU.zip to it.
      10. Open a command prompt as Administrator (this may not be needed, but UAC can be weird in Windows so I recommend it anyway) and navigate to C:\android
      11. From C:\android, type: adb devices and make sure it sees your device. If it does, then proceed. If not, then start over!!
      12. From C:\android, type: RUNMEFIRST.bat and press Enter. This will open another command prompt window. Don't close this window and just move it to the side.
      13. From C:\android, type: Step1.bat and press Enter. (You will see two "Operation not permitted messages. Just ignore them and continue.)
      14. After Step1.bat has finished, go to your phone and open Terminal Emulator...
      15. From the elsa:/$ prompt, type: id from your phone's keyboard and press Enter.
        *** Look for the words "untrusted_app" in the output. If you see them, them proceed. If not, start over from step 11!!
      16. From the elsa:/$ prompt, type: applypatch /system/bin/atd /storage/emulated/0/dirtysanta and press Enter.
        *** Watch the other command prompt window that opened from the earlier step. It will eventually tell you to run Step2.bat.
      17. From C:\android, type: Step2.bat and press Enter. If everything goes well, your phone will reboot into bootloader (it will look tiny).
      18. From C:\android, type: Step3.bat and press Enter. If everything goes well, your phone will reboot back into the system. Don't unlock the phone...
      19. From C:\android, type: adb reboot recovery and press Enter. If everything goes well, your phone will reboot to TWRP.
        *** You will see a message saying your phone is corrupt. Ignore this and DO NOT TOUCH THE DEVICE!! Also, it takes time for TWRP to load so be patient!!
      20. If everything goes well, your phone will eventually boot to TWRP (yaay!). Press Cancel on the password screen, then swipe to modify the system files.
      21. I recommend performing a backup at this point. If you don't know how to perform a backup in TWRP, then Google search is your friend! :)
        If you are running anything other than the Sprint model, STOP here and go back to the OP for your specific instructions!! If you are on Sprint, the continue:
      22. Go to Wipe > Advanced and put checks in the following: Dalvik, System, Data, Internal and Cache and then slide to Wipe. Repeat these steps three times!!
      23. Go back to the main menu, then Wipe > Format Data, type yes and press Enter. Do this three times as well!!
      24. Go back to the main menu, then Reboot > Reboot Recovery and reboot the device back to recovery again.
      25. Go to Install > locate the LS997-deODEXd-signed.zip you added to your External SD card earlier and flash it. Then flash SuperSU.zip the same way...
      26. Once both files have been successfully flashed, click Wipe Cache/Dalvik and then Reboot System
      27. If everything goes well, your phone will reboot.
        *** It takes a good 10-15 minutes for it to boot. It may appear to be frozen, but it's not!! Just let it boot!!!
      28. After the phone has booted, go through the setup process until you are back to the home screen...
      29. From C:\android, type: adb reboot bootloader and press Enter. This will boot the device back to the bootloader screen
      30. From C:\android, type: fastboot flash boot boot2.img and press Enter. Wait for it to say finished.
      31. From C:\android, type: fastboot reboot and press Enter. This will reboot the device. Wait for it to finish loading...
      32. From C:\android, type: adb reboot recovery and press Enter. This will reboot the device back to recovery. Again, this takes a long time!
      33. Once you are in recovery, re-flash SuperSU.zip again. When it's complete, click Wipe Dalvik/Cache and then click Reboot System.
      34. Wait for the phone to boot up. It will take another 10-15 minutes or so....
      If everything goes well, once the phone has finished booting, you will be fully rooted and ready to rock and roll!!
      15
      According to me2151's post that he is moving on to an Axon 7, I was hoping other developers might step in to continue the project.

      i Bought an Axon 7. That doesnt mean im leaving you guys. I got my replacement v20 today so ill be back in the game. I am going to attempt an alternate method of providing root but it WILL be much more involved than this current one. but if it work the it should work on dirtycow patched devices.

      Word of warning: Any sprint user who is on a version higher than ZV3 then DirtySanta will not work as they patched it.