V12.0.2.0.PEFMIXM: MIUI 12 Global Stable ROM for Redmi S2/Y2

Updated on December 07, 2020: Today Xiaomi rolled the MIUI 12 for the Redmi S2 globally with software version V12.0.2.0.PEFMIXM. The update is still based on Android 10 and brings a major overhaul to the device with a new UI, latest features, and many more.

Updated on March 16, 2020: The Chinese OEM Xiaomi started pushing MIUI Global Stable ROM for Redmi S2/Y2 with software version V11.0.5.0.PEFMIXM. This update is still based on Android 9.0 Pie. If you have not received the update, then manually you can download and install the update by following the guide below along with download links and requirements.

The new MIUI update (Android 9.0 Pie) for Redmi S2/Y2 is rolling out globally via OTA in a phased manner and will take a few days to appear on all the units. It brings the March 2020 Android Security Patch that fixes bugs and improves system security. Additionally, the update brings app vault and security optimization. If you want to install this update on your Redmi S2/Y2 (Codename: ysl) then you can either check for OTA updates or manually flash the firmware from the full step-by-step guide below.

Download MIUI Global Stable ROM for Redmi S2/Y2 [V11.0.5.0.PEFMIXM]

Manually Check OTA Updates

Keep in mind that all the incremental OTA update roll-out always hit a limited number of units initially. Then the broader roll-out process starts and takes some time to arrive on all the units completely. So, it’s better to check for OTA updates manually to get notified.

In order to do that, go to the phone Settings > About Phone > Software update. Additionally, you can perform this task via the Software Updater app directly. If the software version V11.0.5.0.PEFMIXM is available, you can grab it.

Before downloading the OTA update, make sure to charge the phone battery up to 50% minimum and connect to a Wi-Fi network.

However, if you’re not getting the latest OTA update due to some unfortunate reason, don’t worry. You can follow the firmware installation guide below for your Xiaomi Redmi S2/Y2 model.

Downloads and Changelog:

Software Version/Download Changelog

  • Highlights
    • MIUI 12. Yours alone.
  • System animations
    • New: Dynamic window technology takes switching screen orientation to a new level.
    • New: All-new physically based animation engine with advanced architecture will refresh your device’s look.
  • System visuals
    • Brand new visual design works for all types of content and languages.
    • Magazine-level layouts bring important things into the spotlight and make content structure clear.
  • Privacy protection
    • New: Use secure sharing to control what additional data is sent along with shared items.
    • New: MIUI 12 is the first Android-based mobile OS that went through the rigorous enhanced privacy protection testing.
  • Control center
    • New: Swipe down from the upper left corner to open Notification shade and from the upper right corner to open Control center
    • New: Animated icons are a joy to look at!
    • New: Swipe down from the upper right corner of your screen to open Control center.
  • Casting
    • New: You can hide private items while casting and minimize the window to multitask.
  • System
    • Updated Android Security Patch to September 2020. Increased system security.
  • Weather
    • New: New animations bring the weather from outside directly to your screen.
  • Settings
    • New: Security introduces new comprehensive privacy protection mechanisms.
    • New: Lite mode simplifies your device and brings essential features up front.
  • Notes
    • New: You can create folders with notes now.
    • New: New dynamic backgrounds look gorgeous!
    • New: Tasks are completed with a satisfying animation now.
    • New: Checklists of subtasks make managing your agenda much simpler.
  • Security
    • New: New animations feel natural and refreshing.
    • New: Binging your favorite shows will be more convenient with our new video toolbox


  • Updated Android Security Patch to March 2020. Increased system security

How to Install MIUI Global Stable ROM for Redmi S2/Y2 (ysl)

Installing the stock ROM or upgrading the MIUI version on Xiaomi devices is comparatively easy. But you should follow all the pre-requirements and downloads below before proceeding.


  • Supported for: Xiaomi Redmi S2/Y2 (ysl) only. The device should be running on stock ROM to apply the update.
  • Requires: A PC/Laptop and a USB cable.
  • Backup: Take a full Backup of Phone Data at first to keep the important files safe.
  • Charge: Keep your device charged more than 50%.
  • Mi Flash Tool – Download and Install it on your PC
  • Download ADB and Fastboot Tools on your computer
  • Download Xiaomi USB Drivers and install it on the PC


We recommend to take a full backup first. GetDroidTips will not be held responsible for any type of issue on your device while or after following this guide or even flashing any file. So, proceed at your own risk.

Instructions to Install:

We assume that you’ve followed the downloads and requirements properly. Now, you can proceed to install MIUI Global Stable ROM on Redmi S2/Y2. Check out the guide link below along with a video tutorial as well.

Guide to Install MIUI ROM on Xiaomi Device [Recovery/Fastboot]

You can check out our full-depth tutorial video as well:

Video Guide on Steps to Flash Xiaomi Device using Fastboot Method

We hope that you’ve updated or installed the latest MIUI version on your Redmi S2/Y2 (ysl) successfully. Feel free to ask in the comments below for any queries.

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