[LG K7 Guides, News, & Discussion] xcaptaintjx:
I have not been on this site since posting my guide, i do want to let any future people reading this know that, I am not a professional. everything in this guide is using stuff from other peoples threads.... this thread is just step by step directions on how i rooted (and installed TWRP on) MY lg k7 (MetroPCs). Also i had to root before i unlocked the boot loader. Which is not safe, you should probably unlock the boot loader before you root, but i couldn't figure out how to unlock it without root access.

I AM NOT RESPONSIBLE FOR ANY THING THAT HAPPENS TO YOUR DEVICE!

YOU AND ONLY YOU CAN BE HELD RESPONSIBLE​

~BACK UP FILES ON PC, YOUR PHONE WILL BE RESET TO FACTORY SETTINGS DURING THIS TUTORIAL~

Step One: Enable Dev Options

A) open settings>about phone>software info then tap "Build Number" really fast about 10 times

B) open settings>Developer Options, then check the box labeled "Enable OEM Unlock", and the box Labeled "USB Debugging"

Step Two: Install Android SDK/ADB/USB drivers

A) go to http://developer.android.com/sdk/index.html in your browser, and click download...

B) go to https://www.microsoft.com/net/default.aspx in your browser, and click the big blue button that says .NET

Framework 4.6.1 or X.X.X depending on when your reading this...

C) go to http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html scroll down until you get to the first box, labeled Java SE Development Kit 8u91 or XuXX Depending on when your reading this, then find your OS (ex: Windows x86, Mac OS, Linux, Etc..), then select the download link

Step Three: Installing LG K7's USB Driver's

A) unlock your phone

B) plug your phone into you Computer via USB

C) pull down your notifications, Tap on the USB icon which should be labeled "Media Device (MTP)," "Send Images (PTP)," or "Charge Phone"

D) if a dialogue box pops up asking to install drivers tap install, if not proceed to step E

1) Your PC should ask you if you want to auto run, Either auto run or open the folder and run LG_PC_Programs.exe then proceed to Step Four

E) select "Media Device (PTP)," if not already selected

1) click the three vertical dots next to the magnify glass in the upper right hand corner, select install pc drivers, then tap install

Step Four: Installing Java SE

A) return to the folder where you downloaded the files in step two, install the file which contains the word java in it

Step Five: Installing Microsoft .NET 4 Framework

A) now in the same folder as step four, install the with the name "NDP461-KB3102438-Web," the name might be different then mine depending on when you are reading this

B) if it is already installed it will notify you and you can proceed to the next step

Step Six: Installing Android Studio 2.0 (SDK/ADB Drivers)

A) in the download folder from step four & five, double click the remaining file, the name should contain the words "android", and "studio" in it

B) when the dialogue box opens requesting admin rights, select allow

C) click next

D) click next

E) make sure all boxes are checked and click next

F) read the license agreement, (unless your the 99.9% that doesn't) click i agree

G) you may click next or choose where you'd like to install android studio, and where you'd like to install SDK, for this tutorial i will change make a new folder in my docs named SDK then change the SDK install dir to My Docs

H) click next

I) it will take a moment to install so just wait

(note: the progress bar will fill up, then reset, as it is installing in two separate locations)

J) when finished, click next

K) uncheck the box and click finish

Step Seven: Root your device

(Note: I rooted before i unlocked my boat loader, as i could not get it to boot into boot loader mode until i rooted it)

A) go to http://www.kingroot.net/wap on your android device and download the apk file

B) go to settings>security and check the box labeled "Unknown Sources"

C) install the apk

Video tutorial for king root here: https://www.youtube.com/watch?v=tG_ruuTPVpU

(Not my channel or video)

D) open the king root app

E) make sure you have a charged battery or your phone is plugged in as the rooting process time may vary (better safe then sorry)

F) swipe up until you see a "TRY IT" button click it

G) under "Root Access not available" tap "Get Now

H) do not turn off your phone

I) when it is done you can tap optimize now if you wish, otherwise close the app

Step Eight: Replacing KingRoot with SuperSU ~ W0lfDroid Method

A) go to http://www.w0lfdroid.com/2015/05/How-to-Remove-Replace-KingUser-KingRoot-with-SuperSU.html

B) scroll down until you see the word "download:" (should be right above the related posts

C) click on the "new link" next to "Replace_Kingroot_With_SuperSU.zip"

D) extract the .zip so that the "MRW" folder is on your internal storage

(Easiest way is to download it on PC and open up your k7 in "my computer" and select internal storage and drag the MRW folder inside the .zip there)

E) go to google play and search "terminal emulator for android" or use this link if your reading this on your phone https://play.google.com/store/apps/details?id=jackpal.androidterm&hl=en

F) install the first one, or use this link if your reading this on your phone https://play.google.com/store/apps/details?id=jackpal.androidterm&hl=en

G) open terminal emulator

H) type "su" without the quotations

(everything typed in the terminal is case sensative)

I) type "sh /sdcard/mrw/root.sh" without the quotations

J) you might see a few errors, that is fine

K) wait until it says finished

L) when SU opens, select "update" "install" or what ever pops up

M) when it asks to uninstall, uninstall it, it is not uninstalling SuperSU it is uninstalling Kingroot,

O) if 30 minutes pass and it is still uninstalling then exit the app and then reboot the phone

DO NOT STOP HERE ~ YOU HAVE TO UNLOCK THE BOOTLOADER, and OPTIONALLY FLASH TWRP

Step Nine: Unlocking The Bootloader

A) refer to step one and double check the OEM unlock is enabled and USB debugging is turned on

(If not then please enable them)

B) search quick boot on the google play store download the first app it should be a circle with a lightening bolt

C) open quick boot

D) when asked to "allow root access?" tap allow

E) if an add pops up close it with the ex in one of the corners

F) tap on the word boot loader

G) at the top of your phone you should see " * Welcome To Fast Boot Mode : "

H) now go to your SDK dir, in my case it is C:\Users\USER\Documents\SDK

I) hold shift, then right click on the "platform-tools" folder, then select "open command window here"

J) in the CMD window type "fastboot devices" - without quotations

(everything is case sensative)

K) then type "fastboot oem unlock" - without quotations

L) then type "fastboot getvar unlocked" if that doesn't work try "fastboot getvar" or "fastboot getvar unlock" to confirm if it is unlocked

(if non of the getvar commands work you did something wrong, and i wont be able to help you, but if you followed the tutorial you shouldn't have any issues as these are the exact steps i took)

M) then type "fastboot reboot"

LEAVE THE CMD OPEN OR YOU WILL HAVE TO REPEAT steps H-I

Step Ten: Flashing TWRP

A) go to http://xdaforums.com/general/general/qa-metro-pcs-lg-k7-lgms330-t3331678 and click on the latest download for twrp for me it is BETA1

if the links on that page dont work then use the links here http://xdaforums.com/showpost.php?p=66282525&postcount=42

B) extract the download into your SDK folder on your PC

C) in the sdk CMD window from Step nine

D) type "fastboot devices" - without qoutation

E) ~optional, HIGHLY RECOMENDED~

1)type fastboot "boot twrp-image-3.img" - this will boot up twrp WITHOUT flashing it, just so you can make sure everything is working right

in my case it was twrp-image-3.img check your twrp file name and replace fastboot boot twrp-image-3.img with

fastboot boot INSERT YOUR FILE NAME HERE.img

2)in twrp tap reboot>bootloader

F) when bootloader mode opens back up

G) type "fastboot flash twrp-image-3.img" or "fastboot boot INSERT FILE NAME HERE.img" depending on your file name

H) when finished flashing type "fastboot reboot"

Step eleven

A) follow instructions on step one

B) the reason you must do this is because when you flash TWRP it erases your entire phone and resets it

Congrats you have Successfully Rooted, Unlocked Your Bootloader, and Flashed TWRP, to your LG K7