Below you can find the direct download URL for Poland LG H870 Stock KDZ firmware from LG server.
IMEI:356144086xxxxxx
Model: LG H870
Suffix: AP4POP
Buyer: P4P
Country: Poland
Carrier: Play
Software Version: H87020F_00
OS Version: O
File Name: H87020f_00_P4P_PL_OP_0817.kdz
Download:http://pkg02.lime.gdms.lge.com/dn/downloader.dev?fileKey=FW83K6B1A2G3A1AFE02AM47/H87020f_00_P4P_PL_OP_0817.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 H87020f_00_P4P_PL_OP_0817.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 H87020f_00_P4P_PL_OP_0817.kdz with LGUP, Check this Guide.
A hard reset or master reset can fix almost all software and apps issues on LG H870 smartphone. Learn how to perform a reset, please have a look at LG H870 owners manual.
Bypass Google FRP on LG H870? flashing the stock kdz firmware for LG H870 does not allow you to bypass the Google Account Verification process.
LG H870 SIM-unlock? flashing stock firmware with LGUP can not unlock your LG H870 phone.
Below you can download some useful tools and Software:
Download: LGUP 1.14 https://drive.google.com/open?id=1SOhoR2hn9PKiIvUUeiDVeX-8PfuMx1qq
LG Bridge windows: LGBridge_Setup.exe
LG Bridge Mac:LGBridge_Mac.dmg
/LGMobileDriver_WHQL_Ver_4.2.0.exe [Latest LG USB drivers 4.2] for Windows