T-Mobile LG Optimus L9 receives official Jelly Bean update to P76920f firmware

Posted on Jul 13 2013 - 10:43pm by rickychew

There is once when T-Mobile rolling out Android 4.1.2 Jelly Bean update to LG Optimus L9 but was pulled back due to the instability of the firmware. After being improved and fixed by LG, the official Android 4.1.2 Jelly Bean for LG Optimus L9 is finally released to the public as stable version.

How to Root LG Optimus L9 P76* Series on Android 4.1.2 Jelly Bean Stock Firmware

This update is codenamed P76920f and with added security enhancement as described in T-Mobile official website. Besides, it is also the cross-version update from Android 4.0.4 Ice Cream Sandwich to Android 4.1.2 Jelly Bean. The update package is 350MB in size. We highly recommend to connect your device to a stable connection during the downloading of update file.


To download OTA update from T Mobile, go to Menu-> Settings –> About device –> System Update. If you have connected to WiFi, tap on OK. It have been reminded by T-Mobile that you will receive the message The device is up to date if the maximum daily download limit is reached. Please wait for the OTA update to arrive.

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Ricky Chew is a tech enthusiast who love to share his knowledge with others. You may find him via Twitter and Facebook. He may not a expert in Computer but indeed a tech enthusiasm.

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