Below you can find the direct download URL for United States LG K428SG Stock KDZ firmware from LG server.
Model: LG K428SG
Country: United States
Software Version: K42820L_00
OS Version: N
File Name: K42820l_00_0620.kdz
Can not download the kdz file from above URL with a browser? PLEASE download and install XDM download manager first . Just copy above URL and start a new Download JOB in XDM download manager to save the K42820l_00_0620.kdz onto your computer.
KK = Android Kitkat LMR1 or L = Android llolip MMR1 or M = Android Marshmallow NMR1 or N = Android Nougat OMR1 or O = Android Oreo
Learn how to flash K42820l_00_0620.kdz with LGUP, Check this Guide.
A hard reset or master reset can fix almost all software and apps issues on LG K428SG smartphone. Learn how to perform a reset, please have a look at LG K428SG owners manual.
Bypass Google FRP on LG K428SG? flashing the stock kdz firmware for LG K428SG does not allow you to bypass the Google Account Verification process.
LG K428SG SIM-unlock? flashing stock firmware with LGUP can not unlock your LG K428SG phone.
Below you can download some useful tools and Software:
Download: LGUP 1.14 https://drive.google.com/open?id=1SOhoR2hn9PKiIvUUeiDVeX-8PfuMx1qq
/LGMobileDriver_WHQL_Ver_4.2.0.exe [Latest LG USB drivers 4.2] for Windows