Here You can download the LGUP Tool 1.15.
The LGUP 1.15 was developed by LG Electronics, It is used to sideload LG Stock Firmware (TOT/KDZ/BIN format) onto LG Android smartphones.
How to install LGUP Tool. 1.15
Step 1, Download LGUP_Dev_Frame_Ver_1_15_0_6.msi
Step 2, Run the LGUP_Dev_Frame_Ver_1_15_0_6.msi as administrator
Step 3, Click Next,
Step 4, Select “I accept the terms I the license agreement” and click “next”
Step 5, Now You have installed the LGUP Dev 1.15 onto your computers
The LGUP 1.15 should work on computers running on Windows 7 or above, 32 or 64 digit
if you experience any issues with the LGUP 1.15, please let us know in the comments area below.