The latest software for the LG G Vista AT&T is software version H74020r.
To check what version of software is installed on your device:
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From the Home Screen, tap Apps
> Settings
> About phone
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Tap Software information.
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View the current software under Software version.
Select software for more info:
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Android 6.0.1 Marshmallow, software version H74020r - Release date December, 2017
- Wi-Fi KRACK patch
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Android 6.0.1 Marshmallow, software version H74020q - Release date November, 2016
- Android 6.0.1 Marshmallow Software Update
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Android 6.0.1 Marshmallow, software version H74020e - Release date March, 2016
- AT&T Wi-Fi Calling
- Advanced Messaging
- Android Security Update
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Android 5.1 Lollipop, software version H74010b - Release date November, 2015
- General maintenance
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Android 5.1 Lollipop, software version H74010a
- Launch software
Software Update
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When the software update is available, you receive a notification prompt.
Note: If prompted, connect to a Wi-Fi network to download the software update. To start download after enabling Wi-Fi, tap Apps > Settings > General tab > About phone > Software Update > Continue update.
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Tap Download. While the software is downloading the software download icon will display in the status bar.
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Once downloaded, tap Continue to install. Your device will restart to perform the update.
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When the update is complete, your phone will restart and transition through a series of alerts stating Android is upgrading. Once your phone has powered on you will be notified that the software update successfully installed. Tap OK to close the notification.
Troubleshooting
If you have not been notified of an available software update, you can manually check if one is available.
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From the Home Screen, tap Apps
> Settings
> About phone
> System Updates.
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Tap Update Now to manually check for a new update.
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You will be prompted if a new software update is available. Continue from Software Update, step 1.
Software update only available Over-The-Air.