[LG Leon ROMs, Kernels, Recoveries, & Other Develop] dmmckitrick:
Disclaimer: I am not responsible for any damages that may occur from using any of the information provided below. If you need help feel free to ask.

Warning: You will not be able to return to LGMS34510b after flashing D or F.

Flashing KDZ will remove root and custom recovery. You may need to unlock bootloader after flashing.

KDZ Files for LG Leon LGMS345 (MetroPCS)

LGMS345	AMTPKT	MS34510F_00	MTP	MetroPCS	Download (Stock Android 5.1.1)(Bootloader can be Unlocked)

LGMS345	AMTPKT	MS34510D_00	MTP	MetroPCS	Download (Stock Android 5.1.1)(Bootloader can be unlocked)

Tools:

LG Drivers - http://www.rootmetropcs.com/lg-leon/drivers/LG-Mobile-Driver_v4.0.3.0.zip

LG Flash Tool - http://www.rootmetropcs.com/lg-leon/LG_Flash_Tool_2014/LG Flash Tool 2014.zip

KDZ Extractor - http://xdaforums.com/showthread.php?t=2483250

[YOUTUBE]bn-DjVxwM1M[/YOUTUBE]

How to flash kdz: (Unbrick Phone)

Remove the battery and put it back in.

Hold the Volume Up button while connecting to USB Cable to the phone from the computer.

The Volume up button needs to be held until it reaches download mode

Having problems connecting phone?

[*]Open device manager and change the LG Mobile USB Serial port to COM 20 and restart.

Open the Flash Tool

Select Type: 3GQCT

PhoneMode: EMERGENCY

KDZ : MS34510f_00.KDZ

Click on Normal Flash

Click on Clear update registry

Country: different country

Language: English (If no language displays do not worry. Just leave blank)

Click okay and wait for the LG Mobile Support tool to recognize the device. It takes a minute or two but the tool will recognize it. The software starts the extraction and re-boots at %100. You can remove USB cable, your device will boot normally, and the device is no longer stuck in a boot loop.

Unlocking bootloader:

Launch the Settings Application

Scroll Down and Tap on About Phone(or About Device)

Locate the Build Number Section

Tap on the Build Number Option 7 Times

Go Back to the Main Settings Page

Scroll Down and Tap on Developer Options

Enable USB Debugging mode.

Look for the ‘OEM Unlock’ Option in the Developer Mode Section (tap and check the box)

Now the bootloader is unlocked.

One Click Root - (Root + SupuerSU)

Developed by CamoHidddenDj

Downloads:

LG ROOT ZIP (LG Leon one click root zip)

LG Drivers (LG Universal drivers. You may already have installed)

[YOUTUBE]K-Vkp5zoPQQ[/YOUTUBE]

Navigate to downloads and install LG Drivers.

Navigate to download location and UNZIP the file. LG_Leon_OCR_v2.zip

Navigate to the unzipped folder \LG_Leon_OCR_v2

Connect your LG leon to the computer via USB cable. Make sure you have unlocked bootloader.

In the LG_Leon_OCR_v2 folder click the root.bat (This will root your device)

follow the instructions and wait. (Phone will reboot a couple times)

When done you may need to remove battery and reboot.

You are now rooted.

Custom Recovery for LG Leon MS345

Developed by Unjustified Dev

Downloads:

TWRP - Download

How to install custom recovery

Install Flashify from playstore.

Open Flashify

Grant Superuser permissions.

Under Flash Tab Click Recovery Image

Choose file explorer and navigate to where you save twrp-2.8.7.0-ms345.img and select.

It will ask Flash recovery? Tap YUP!

Once recovery has finished flashing it will ask if you want to reboot. Click Ok.

This should boot you into TWRP Recovery mode.

Xposed for LG Leon MS345

Created by rovo89

Downloads:

Xposed Installer APK - (Xposed Installer APP For LG Leon)

Xposed Lollipop Framework - (Xposed Lollipop 5.1.1 for LG Leon)'

How to Install Xposed

Boot into recovery TWRP

Tap Install

Navigate to folder you saved xposed-v79-sdk22-arm.zip and select.

Swipe to confirm Flash.

When Flash is complete Reboot to System.

Install XposedInstall_3.0_alpha4.apk

Now you should have Xposed framework installed and be able to download modules.

Custom Roms:

cm-12.1-20150906-UNOFFICIAL - Created by LEPT-Development (Camera does not work)