Optimus One P540

How to Update LG Optimus GT 540 with Jellybean 4.1 Cyanogen Mod 10 Firmware

LG LogoLG Optimus One GT 540 smartphone can now be easily installed with the latest version of Jellybean 4.1 firmware, all thanks to the Cyanogen mod team for coming up with this update. Please note that this is not an official firmware released by LG Electronics and unfortunately there is no ETA on by when there will be an official update of Jellybean 4.1 for LG Optimus GT 540. In the due course of this article we will be checking out on how you can install this update and for your convenience we have enlisted below the list of things which work and the things which doesn’t work.

In the past few days we saw on what are the various custom ROM firmwares and also we will be checking out on what are the newer jellybean 4.1 based custom ROM firmwares which we will be coming out very soon.


  • Gsm (Not Complete)
  • Gps
  • 3d
  • Wifi
  • Bluetooth
  • Sd Card(Not Complete)
  • Ums(Not Complete)
  • Hw Acceleration
  • Accelerometer
  • Haptic Feedback
  • Keyboard
  • Time Zones
  • Root
  • Mic
  • App2sd
  • Lights
  • Audio(Not Complete)
  • Browser
  • Gallery

Not Work:

  • Camera
  • Headphones
  • Codecs
  • Possible Problems With Locked SIM Cards

Disclaimer: If you don’t follow the instructions then there is a probability that the device may get bricked for which we should not be held responsible. Just in case if you face any issues then we will surely address the same.

All the data in your LG Optimus GT 540 smartphone will have to be backed up so as to make sure that just in case if the data gets lost or corrupted, the same can be restored with the help of below mentioned steps. Don’t use any PC Suites for backing up the data as it doesn’t detect the device in the custom ROM firmware.

SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Call Log – Call Log and Restore
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names

Minimum battery life should be a minimum of 50% to avoid device from turning Off in the middle of the update process. Enable the USB Debugging Mode too from the path “Settings > Applications > Development > USB debugging”. All the security suites in your computer should be turned Off or uninstalled as these interrupt the process of firmware update.

Once you are done with the above mentioned steps, you can now proceed to the next page where we have summed up a detailed tutorial on how to apply this update.

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