[LG V20 Guides, News, & Discussion] kish9046:
STEP BY STEP GUIDE FOR LG V20 H918 UNLOCKING BOOTLOADER, DOWNGRADING, ROOTING AND INSTALLING CUSTOM ROMS (NOOB FRIENDLY)

DISCLAIMER

: I'M NOT THE DEVELOPER OF ANY OF THE BELOW SOFTWARE'S AND YOU PROCEED WITH YOUR OWN RISK AS THIS INVOLVES BRICKING OR DAMAGING YOUR MOBILE IF THE PROCEDURE IS NOT FOLLOWED CORRECTLY. I'M JUST SHARING THE WHOLE PROCESS WHICH I HAVE FOLLOWED TO ROOT AND INSTALL TWRP IN MY LGV20 H918 UNLOCKED T MOBILE.

AND I HAVE TESTED THIS IN MY OWN DEVICE AND WAS ABLE TO ROOT AND ACHIEVE TWRP.

THIS IS ONLY FOR LGV20 H918 VERSION

ENSURE INTERNET IS UP AND RUNNING IN YOUR PC

EDIT: THE WHOLE PROCESS HAS NOW BEEN AUTOMATED IN TWO SIMPLE STEPS TO PREVENT ANY POTENTIAL DAMAGE TO YOUR DEVICE. THANKS TO THE LAFSPLOIT CREATOR BRIAN [MENTION=3167089]runningnak3d[/MENTION].

JUST FOLLOW THE PROCEDURE BELOW AND YOU SHOULD HAVE YOUR DEVICE ROOTED IN NO TIME

1. BACKUP ALL YOUR IMPORTANT DATA BEFORE PROCEEDING.

2.MAKE SURE YOU HAVE CHARGED YOUR PHONE TO AT LEAST 90 PERCENT

CHECK YOUR PHONE SOFTWARE VERSION IN SETTINGS---ABOUT PHONE----SOFTWARE INFO

IF IT IS ANYTHING BETWEEN H91810P TO H91810U MEANS IT IS ARB1 (ANTI ROLL BACK 1) AND YOU NEED TO USE LAFSPLOIT METHOD TO ROOT AND INSTALL TWRP,

IF YOUR VERSION IS H91810O OR BELOW (ARB0), YOU CAN EITHER USE DIRTYCOW OR LAFSPLOIT METHOD FOR THE SAME.

IF YOU ARE ON ARB1, PLEASE FOLLOW THE METHOD BELOW,

PART 1: DOWNGRADING

IF YOUR VERSION IS H91810 (Q, R, S, T, U) YOU NEED TO DOWNGRADE TO A LOWER VERSION ( H91810P) TO EXECUTE LAFSPLOIT.

IF YOU ARE ALREADY ON H91810P, YOU STILL NEED TO RE FLASH THE H91810P KDZ AGAIN FOR THE LAFSPLOIT SCRIPT TO WORK CORRECTLY.

DOWNLOAD H91810P KDZ FILE FROM BELOW

https://androidfilehost.com/?w=files&flid=282709

DOWNLOAD AND INSTALL ALL THE FILES BELOW IN YOUR PC

UPPERCUT AND LGUP----

http://downloads.codefi.re/autoprime/LG/Flash_Tools/LGUP/

LG DRIVERS---

http://tool.cdn.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425

CONNECT YOUR MOBILE TO YOUR PC IN DOWNLOAD MODE (SWITCH OFF YOUR MOBILE AND CONNECT THE USB FROM PC WHILE HOLDING THE VOLUME UP BUTTON SIMULTANEOUSLY)

RUN UPPERCUT.EXE WHICH WOULD OPEN LG'S UPDATER TOOL AUTOMATICALLY.

INSIDE THE LG UPDATER TOOL, CLICK ON BIN AND SELECT THE H91810P KDZ FILE DOWNLOADED EARLIER.

NOW SELECT UPGRADE AND FLASH

ENSURE THE USB CABLE IS CONNECTED THROUGH THE FLASHING PROCESS AND WAIT FOR YOUR PHONE TO REBOOT AND THEN REMOVE THE USB CABLE.

CHECK THE SOFTWARE VERSION AND ENSURE IT IS H91810P

PART 2: UNLOCKING BOOTLOADER

HEAD TO SETTINGS---ABOUT PHONE----SOFTWARE INFO (ENSURE IT IS H91810P)

ENABLE DEVELOPER OPTION IN YOUR PHONE BY CLICKING ON THE BUILD NUMBER MULTIPLE TIMES

NOW HEAD TO SETTINGS---DEVELOPER OPTIONS

TURN ON OEM UNLOCKING, ENABLE USB DEBUGGING AND DISABLE 'VERIFY APPS OVER USB'

NOW CONNECT YOUR PHONE TO PC AND OPEN ADB COMMAND CENTER PROMPT IN YOUR PC

adb devices---->CHECK IF YOUR MOBILE IS CORRECTLY RECOGNIZED IN ADB

adb reboot bootloader--->THIS REBOOTS YOUR DEVICE IN FASTBOOT MODE

fastboot devices---->CHECK IF YOUR MOBILE IS CORRECTLY RECOGNIZED IN FASTBOOT

fastboot oem unlock---->THIS COMMAND WOULD UNLOCK YOUR BOOTLOADER AND RESET's YOUR DEVICE.

fastboot oem device-info OR fastboot getvar unlocked ----->THIS WOULD CONFIRM IF YOUR BOOTLOADER HAS BEEN UNLOCKED OR NOT.

fastboot reboot-----> THIS WOULD REBOOT YOUR DEVICE

IF THE BOOTLOADER HAS BEEN SUCCESSFULLY UNLOCKED, THE DEVICE WILL SHOW AN UNLOCKED BOOTLOADER WARNING MESSAGE WHILE BOOTING (THIS CAN BE IGNORED OF COURSE)

PART 3: CREATING A BOOTABLE LINUX USB USING FWUL

DOWNLOAD FWUL_v2.7_x86_64_15GB.zip FROM THE LINK BELOW AND EXTRACT THE IMAGE FILE SOMEWHERE IN YOUR PC.

https://androidfilehost.com/?w=files&flid=214529

DOWNLOAD RUFUS FROM BELOW AND INSTALL

https://rufus.akeo.ie/

INSERT A PEN DRIVE IN YOUR PC AND RUN RUFUS.

INSIDE RUFUS SELECT THE IMAGE FILE AND SELECT START (AFTER SELECTING START SELECT DD MODE IN THE DIALOGUE BOX) TO CREATE A BOOTABLE PEN DRIVE (WARNING: THIS WOULD FORMAT YOUR PEN DRIVE)

NOW YOU SHOULD BOOT YOUR PC FROM THE BOOTABLE USB STICK WHICH YOU HAVE JUST CREATED

THIS WOULD MAKE YOUR PC RUN LINUX OS

TYPE PASSWORD AS linux AND ENTER

PART 4: INSTALLING TWRP AND ROOTING USING LAFSPLOIT

BEFORE PROCEEDING ENSURE YOU BOOT YOUR PHONE AND DONE ALL THE BASIC SETTINGS

NOW HEAD TO THE DEVELOPER OPTIONS IN YOUR DEVICE AND ENSURE OEM UNLOCKING AND USB DEBUGGING ARE SWITCHED ON.

NOW CONNECT YOUR DEVICE TO THE PC (RUNNING LINUX OS FROM PENDRIVE) IN DOWNLOAD MODE (SWITCH OFF YOUR MOBILE AND CONNECT THE USB FROM PC WHILE HOLDING THE VOLUME UP BUTTON SIMULTANEOUSLY)

DOUBLE CLICK ON THE LG FOLDER INSIDE FWUL DESKTOP

INSIDE THAT, DOUBLE CLICK ON LGLAF(RUNNINGNAK3D) ICON WHICH WILL OPEN A TERMINAL

ENTER THE BELOW COMMANDS

git pull

git checkout h918-miscwrte

./step1.sh

THE ABOVE COMMAND FLASHES TWRP RECOVERY ONTO YOUR DEVICE.

WAIT AND PULL OUT YOUR DEVICE WHEN IT ASKS TO.

RECOMMENDED

: NOW THAT TWRP HAS SUCCESSFULLY INSTALLED, YOU CAN MANUALLY FORMAT,FLASH LATEST TWRP RECOVERY AND USE ANY METHOD LIKE MAGISK OR SU FOR ROOTING.

INSIDE TWRP RECOVERY. FIRST FORMAT USING WIPE--ADVANCED FORMAT--TYPE yes AND FULL DO A FULL FORMAT, THEN FLASH MAGISK AND THE LATEST TWRP RECOVERY BELOW.

MAGISK ZIP DOWNLOAD:

https://github.com/topjohnwu/Magisk/releases/download/v16.0/Magisk-v16.0.zip

LATEST TWRP BY PHOENIX(H918):

https://xdaforums.com/v20/development/recovery-twrp-3-2-1-0-t3720239

OR

IF YOU ARE UNSURE ABOUT FORMATTING AND FLASHING, JUST USE THE BELOW COMMAND TO DO ALL THE WORK AUTOMATICALLY

CONNECT YOUR DEVICE AGAIN IN DOWNLOAD MODE AND ENTER THE FOLLOWING COMMAND

./step2.sh

THE ABOVE COMMAND FORMATS YOUR DEVICE AND FLASHES MAGISK TO ACQUIRE ROOT.

TIP : IF YOU FACE ANY ENCRYPTION ERROR AFTER USING STEP2. SH, DO A ADVANCED FORMAT WITHIN TWRP AND FLASH MAGISK AND LATEST TWRP BY PHOENIX MANUALLY.

YOU ARE NOW ROOTED WITH TWRP RECOVERY INSTALLED.

REMEMBER TO BACK UP THE CURRENT ROM BEFORE FLASHING ANYTHING..... DO CHECK POST #2 FOR OTHER TWEAKS

IF YOU WISH TO UPDATE TO LATEST STOCK (10U) AND KEEP ROOT AND TWRP, JUST FOLLOW THIS LINK AND DO REMEMBER TO ROOT USING MAGISK AFTER FLASHING THE ROM BEFORE YOU BOOT.

https://xdaforums.com/v20/development/rom-h91810q-stock-rom-twrp-flashable-zip-t3681312

I WOULD LIKE TO THANK ALL THE DEVOLEPERS WHO HAVE CREATED THE ABOVE SOFTWARES WITHOUT WHICH THIS ISNT POSSIBLE.

CREDITS:

[MENTION=2684188]autoprime[/MENTION] FOR HIS UPPERCUT TOOL

[MENTION=5545101]steadfasterX[/MENTION] FOR HIS FWUL TOOL

[MENTION=8639605]Phoenix591[/MENTION] FOR HIS WORKS ON TWRP RECOVERY

AND FINALLY, [MENTION=3167089]runningnak3d[/MENTION] FOR HIS EXCELLENT WORK IN ROOTING OUR DEVICE :good: