[Guide] 10 Step Repair Guide KDZ for Bootloop

Credits go to LGBBS.NET Admin For this Guide.

Fix for this problem on various models


You might get some false positives in AntiVirus. Http.exe gives Norton a WS.Reputation1.Threat, which is what a lot of android toolkits get. This file acts as a web server so it is classed as malicious to some anti- virus programs.

Make sure you have KDZ file
KDZ file can be a test version, which can be the official version, the version can also be a CSE

Step 1：LG Android phones to download and install drivers
http://tool.xcdn.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425

Step 2：
Download FlashTool.1.0.54_lgbbs.net.rar, then extract

https://mega.co.nz/#!3VcxSRpJ!qvXyBGIvT4xym1w-dkkyU5sy0nbgU5U_ubddOawO2g8

Step 3：
Installation "B2CAppSetup.exe"
Its location in: “FlashTool.1.0.54_lgbbs.net\KDZ_FW_UPD_EN\B2CAppSetup.exe”After installation is complete, it will automatically open "LGMobile Support Tool" Please manually close "LGMobile Support Tool"



Step 4：
The phone into "download mode"
If you do not enter, shut down phone. Hold volume up button and install USB cable.
Enter "download mode", check your computer's Device Manager to check there are no LG COM port is displayed



Step 5：
Open Notepad on Windows as Administrator
Open the file "hosts" locted at "C:\Windows\System32\drivers\etc" folder
Add a message: 127.0.0.1 csmg.lgmobile.com



Step 6：
Copy "FlashTool.1.0.54_lgbbs.net\LGMOBILEAX" all of the following files to the "LGMobile Support Tool" installation directory







Tip:If you do not know "LGMobile Support Tool" installation directory where you can find "LGMobile Support Tool" Right click on your desktop, select "Properties", then click "Open File Location", will enter the "LGMobile Support Tool "the installation directory



Step 7：
Open the folder "FlashTool.1.0.54_lgbbs.net"
Open http.exe, after opening Minimize



Then open UpTestEX.exe
By images to choose



By images to choose





Step 8：
flashing





Step 9：
Wait for the phone to display LG LOGO, prove that they have completed flashing
Of course, you can also wait for 100% completion



Step 10：
After the flashing is complete, turn off the "UpTestEX.exe"
Exit "http.exe"
Use Notepad to open the "hosts" file, delete "127.0.0.1 csmg.lgmobile.com"
Restart Computer and run a full scan go back online.