Download X420HM20B_00 (ARG) LG K40 (LMX420HM) ROM KDZ Firmware
Download the KDZ Firmware for LG K40 have model code is LMX420HM. This KDZ Firmware file is for region ARG. Please make sure you are trying to download and flash correct model and region. This Firmware version is X420HM20B_00 and the OS is Android 8.x Oreo. The firmware size is 2.37 GB. We recommend you are using official LG Flash Tool. LGROM.com will not responsible for any damage caused by using the files on this website
Firmware information
Model
LG K40 (LMX420HM)
Region
ARG
Software version
X420HM20B / X420HM20B_00
File name
X420HM20b_00_OPEN_SCA_OP_0703.kdz
OS
Android 8.x Oreo
File size
2.37 GB
Downloaded
13

How to Flash LG ROM / Firmware / KDZ

Notice: Download and Flash your phone with your own risk. We will not responsible for any damage caused by using the files on LGROM.com

  1. Download LGROMUP
  2. Boot your phone to Download Mode (Hold Volume up button and connect cable)
  3. Install LG Driver if you are not installed it before
  4. Open the LGROMUP tool.
  5. Select Serial Port, DLL, KDZ file
  6. Click Flash and wait to finish