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Redmi Note 4 MTK
MIUI BetaWeeklyChina

Redmi Note 4 MTK MIUI Beta 9.3.21

Weekly firmware for the China Redmi Note 4 MTK (nikel), released March 22, 2019.

Download 9.3.21

Recovery ROM (OTA .zip) · 1.6 GB Install from the phone’s updater app — keeps your data.
MD5: a1683494d26174d6afaeba6b44463f78
Download
Fastboot ROM (.tgz) · 1.8 GB Full image for Mi Flash Tool — clean install, unbrick or downgrade.
MD5: 21da2b9746c2c1a81376e9fb888aab10
Download

This is a Weekly build. It may contain bugs and is meant for testers — wait for the Stable release if you depend on your phone daily.

Files are served from Xiaomi’s official servers. Compare the MD5 checksum after downloading to make sure the file is complete and untouched.

Firmware details

Device
Redmi Note 4 MTK
Codename
nikel
Region
China
Version
9.3.21
OS
MIUI Beta
Android
6.0
Branch
Weekly
Released
Mar 22, 2019
Package
Recovery 1.6 GB / Fastboot 1.8 GB

How to install 9.3.21

Recovery ROM (recommended, keeps data)

  1. Back up your important data and charge the phone to at least 50%.
  2. Download the Recovery ROM above on your Redmi Note 4 MTK.
  3. Open Settings → About phone and tap the MIUI version card.
  4. Tap the ⋮ menu → Choose update package and select the downloaded .zip file.
  5. Wait for verification, then tap Reboot now. The update takes 10–20 minutes.

Fastboot ROM (clean install, needs unlocked bootloader)

  1. Make sure the bootloader is unlocked and install Mi Flash Tool plus the Xiaomi USB drivers on a Windows PC.
  2. Download and extract the Fastboot ROM (.tgz) to a short path such as C:\rom.
  3. Power off the phone, hold Volume Down + Power to enter Fastboot mode and connect it via USB.
  4. In Mi Flash Tool select the extracted folder, choose clean all (wipes data) and avoid “clean all and lock” unless you want to relock.
  5. Click Flash and wait until the tool shows success; the phone reboots automatically.

Other Redmi Note 4 MTK (China) builds

Device page →
DeviceVersionAndroidBranchReleased
Redmi Note 4 MTKChina · nikelV10.2.2.0.MBFCNXM
MIUI 10.2Stable
6.0Stable

Redmi Note 4 MTK firmware for other regions

Frequently asked questions

Is 9.3.21 an official Redmi Note 4 MTK update?
Yes. 9.3.21 is an official Weekly MIUI Beta build for the Redmi Note 4 MTK (China), released by Xiaomi on March 22, 2019. The download links point directly to Xiaomi’s update servers.
Which Android version does 9.3.21 use?
This firmware is based on Android 6.0.
Will installing 9.3.21 erase my data?
Installing the Recovery package through the updater app keeps your apps and data. Flashing the Fastboot package with “clean all” wipes the phone — back up first.
Can I install this on another region’s device?
Only install firmware that matches your device’s region (China) and codename (nikel). Cross-region flashing requires an unlocked bootloader and can cause problems.