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Use this page to identify software versions for the LG K40 as well as details on recent software updates.

On this page:

 

Identify the device's current software version

Android 9.0

  1. From your list of apps, tap Settings > General > About phone > Software info.
  2. Review the information in the Review software version details section below.

 

Review software version details

VERSION RELEASE DATE ENHANCEMENTS STATUS

Android 9.0

Software version: 
X420TM10n

June 1, 2021

May 2021 security updates

Available June 1, 2021

If your device meets the requirements below, this update will be available to download. 

Android 9.0

Software version: 
X420TM10m

March 30, 2021

March 2021 security updates

Available March 30, 2021

If your device meets the requirements below, this update will be available to download. 

Android 9.0

Software version: 
X420TM10l

February 5, 2021

January 2021 security updates

Available February 5, 2021

If your device meets the requirements below, this update will be available to download.

Android 9.0

Software version: 
X420TM10k

December 18, 2020

November 2020 security updates

Available December 18, 2020

If your device meets the requirements below, this update will be available to download. 

Android 9.0

Software version:
X420TM10i

August 27, 2020

August 2020 security updates

Available August 27, 2020

If your device meets the requirements below, this update will be available to download. 

Android 9.0

Software version:
X420TM10h

July 13, 2020

June 2020 security updates

Available July 13, 2020

If your device meets the update requirements, this update will be available to you to download. 

Android 9.0

Software version:
X420TM10g

May 19, 2020

April 2020 security updates

Available May 19, 2020

If your device meets the update requirements, this update will be available to you to download. 

Android 9.0

Software version:
X420TM10f

April 6, 2020

March 2020 security updates

Various fixes and improvements

Available April 6, 2020

If your device meets the update requirements, this update will be available to you to download. 

Android 9.0

Software version:
X420TM10e

February 18, 2020

February 2020 security updates

Available February 18, 2020

If your device meets the update requirements, this update will be available to you to download. 

Android 9.0

Software version: 
X420TM10d

December 23, 2019

November security updates

Available December 23, 2019

If your device meets the update requirements, this update will be available to you to download. 

Android 9.0

Software version:
X420TM10c

October 25, 2019

October security updates

Available October 25, 2019

If your device meets the update requirements, this update will be available to you to download. 

Android 9.0

Software version:
X420TM10b

September 27, 2019

Original software

Available September 27, 2019

This is the launch software version of the device. When a software update becomes available, this information will be updated.

Other versions

N/A

N/A

Your device has non-T-Mobile software, and it is unsupported. The manufacturer and T-Mobile cannot update your software.

 

Determine update requirements

Your device must meet the following requirements to update your software to the most current version:

  • 50% or higher battery life
  • Data connection
  • File size: 129 MB

 

Update software versions

Update automatically over the air (OTA)

  1. From your apps list, tap Settings > General > Update center > System update.
  2. Tap Check for update and wait while the device checks for updates.
  3. If an update is available, follow the on-screen steps to download and install it.

Update from a computer

  1. Download, install and open the compatible software for the LG Bridge from http://www.lg.com/us/support/software-firmware-drivers to your PC.
  2. Connect the device using the provided USB cable to the PC.
  3. On the device drag down the notification panel and tap USB notification >  Media device (MTP).
  4. On the PC, open the LG Bridge app.
  5. On the Software update tab, click Software update.
  6. If an update is available, a message will appear about the update. Click Start to install the update. Do not unplug the device from the PC until the update is complete.

 

Issues after updating

If you experience issues after updating to the latest software version, perform a master reset.

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