Software version: Nokia Lumia 521

Learn how to check the software version and see official versions for the Nokia Lumia 521. Find out more on this page:


Beginning March 17, the Lumia 521 received a software update to 3056.4000.1404.0034. This update provides features and improvements

New Features

  • App Switcher
  • Screen rotation lock


  • User experience improvements

Important: If you receive the error 'Update needs more space' while performing the software update, see: 'Update needs more space': Nokia Lumia 521.

Update needs more space.png


Software version

Software update: Automatic (OTA)

Software update: Download



Software version

Software update: Automatic (OTA)

Software update: Download



Software version

Check the software version

To check the current software version, follow these steps:


  1. From the home screen, swipe left to Applications.
  2. Tap Settings.
  3. Tap About.
  4. Tap More Info.
  5. Read the Firmware revision number on the phone, and check it below:


Firmware revision numberStatus


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


This document will be updated if and when new software is available.




Your phone can update to version 3056.4000.1404.0034:

If the update fails, see: Software update troubleshooting.

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:

  • 50% or higher battery life
  • Wi-Fi or data connection
  • 321 MB available memory (File size of update: 321 MB)


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Software update: Automatic (OTA)

Update automatically Over-The-Air (OTA)

This software update will be available to your phone after March 17, 2014. Your phone will notify you when it is ready to update. Follow the on-screen prompts to complete the OTA update. If your phone has not received an OTA message, see Software update: Download below.




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Software update: Download

Download and install software update

You can download and install the software update:

From the phone



Update software from the phone

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


  1. Connect to a Wi-Fi data connection.
  2. From the Home screen, swipe left.
  3. Scroll to and tap Settings.
  4. Touch phone update.
  5. Touch check for updates.
  6. Follow on screen prompts.
  7. Wait as your phone restarts and updates.



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