Software version: ALCATEL ONETOUCH Fierce™

Learn how to check and update your software for the ALCATEL ONETOUCH Fierce™.


Beginning January 3, the Alcatel ONE TOUCH Fierce™ received a a software update to L2RUMR0. This update provides the following features and improvements:


New features

  • Update to Android 4.2.2


  • Resolved the power issue resulting in devices not powering on for several minutes



Software update: Download

Download and install software update

Update software from the phone

To check for updates and download the update from the Alcatel servers, follow these steps:


  1. From the Home screen, tap the All Apps button.
  2. Tap Settings.
  3. Tap About phone.
  4. Tap System update.
  5. Tap Check for software updates.
  6. The mandatory update will begin downloading automatically.
  7. Tap Update.



Software version

Check the software version

To check the current software version, follow these steps:


  1. From any home screen, tap the All Apps icon.
  2. Tap Settings.
  3. Scroll down to 'SYSTEM,' then tap About phone.
  4. View the Build number and reference the table below:


Software versionStatus


Your software is up to date. There are no updates available.


Your phone can update to software version L2RUMR0:

  • Review the Requirements to update below
  • Between January 3 and January 24, you may be prompted to update automatically (OTA).
  • To update now, see how to download the update below.

If the update fails, contact us.

Other versions

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



Requirements to update

To be able to update to the current software version, the below requirements must be met:

  • Android version 4.2.2 / Build number L2FUMF2
  • Device software is not rooted
  • 50% battery life
  • Data connection (preferably a Wi-Fi connection)