Download T-Mobile LG V40 ThinQ December 2019 patch: V405TA20m

Today T-Mobile started rolling December 2019 patch for the LG V40 ThinQ (Model: LMV405TA) with software version V405TA20m. In this guide, we will tell you how to install the T-Mobile LG V40 ThinQ December 2019 patch. Yes, the latest software update for the device has been released and its rolling over-the-air. It is an incremental software based on Android 9.0 Pie.

Those who want a quick upgrade to the December 2019 patch without waiting for the OTA, we have put up the firmware file for the same. The firmware link given below contains a KDZ file where you can install it using our guide. It is quite easy to install. So, check out the guide.

Download T-Mobile LG V40 ThinQ December 2019 patch: V405TA20m

Check Software Update:

In case you were not able to catch the automatic software update for your device, you can manually search for the update. To do it,

go to Settings > Update Center > Software update for manually checking for it. If there is a new notification of the update then, you can tap on it to install.


We recommend you to download the update file by finding a good Wi-Fi network as it will save your carrier data charges on downloading big files. Make sure to charge your phone battery up to 70% before installing any update.


  • Release Date: 18/01/2020
  • Model: LMV405TA
  • Software Version: V405TA20m
  • Android Security Patch Level: December 2019


  • Android security patch level December 2019

Steps to Install T-Mobile LG V40 ThinQ December 2019 patch manually

You have to keep in mind that, the firmware file which we have put up based on the V405TA20m build. This firmware is a KDZ file. So, we will flash it using the LG UP method.


  • This firmware zip file is exclusively for T-Mobile LG V40 ThinQ. Do not use it on any other LG device.
  • Your device must be on stock firmware with version V15d in order to install the current firmware.
  • Recharge your device up to 50 % before installing the update.
  • Take a backup of your device data before installing the new update.


GetDroidTips will not be responsible for any hardware or software related problems on your phone if you choose to install the firmware provided in this guide. Follow this guide at your own risk.

Required Files

Firmware Installation guide

Here is the complete guide which will help you perform the installation of the latest V20a firmware on your T-Mobile LG V40 ThinQ.

Install LG KDZ Firmware on any LG Devices.

That’s it, guys. Now, you know how to successfully install the T-Mobile LG V40 ThinQ December 2019 patch. We hope that this guide was useful to you.

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