Realme X receiving March and April 2021 security patch update

Realme X users in China are now receiving a new software update. It brings the latest security patch released in March and April 2021 along with some optimizations. 


The update can be identified by firmware version RMX1901_11_C.19. It brings optimizations to system performance, the recognition accuracy of SMS numbers, system stability and fixes the network statement popup issue when using the cloud service system return function. 

Realme X users in China might have already received the April 2021 security update. Users can manually check for the latest update by navigating to Settings >> Software updates and then tap on Download and install. We’ve also added a download link for the latest package that requires manual installation.

[Note: We don’t recommend flashing any ROM until you don’t have a decent knowledge about flashing ROM and the issues, it may bring.]


  • Realme X


  • RMX1901_11.C.19

  • China

Download link:


  • System
    • Optimize system performance and improve system stability
    • Optimize the recognition accuracy of SMS numbers in some scenarios
  • Application
    • Fix the problem that the network statement popup disappears when using the cloud service system return function
  • Security
    • Update Android security patch (2021.03&2021.04)



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Vicky Kumar

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