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Redmi K30S Ultra
MIUI 12.5Stable BetaChina

Redmi K30S Ultra MIUI 12.5 V12.5.3.0.RJDCNXM

Stable Beta firmware for the China Redmi K30S Ultra (apollo), released August 10, 2021.

Download V12.5.3.0.RJDCNXM

Recovery ROM (OTA .zip) · 3.9 GB Install from the phone’s updater app — keeps your data.
MD5: d98b4e09b524cf99e2cc29c95b20125b
Download

This is a Stable Beta 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 K30S Ultra
Codename
apollo
Region
China
Version
V12.5.3.0.RJDCNXM
OS
MIUI 12.5
Android
11.0
Branch
Stable Beta
Released
Aug 10, 2021
Package
Recovery 3.9 GB

How to install V12.5.3.0.RJDCNXM

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 K30S Ultra.
  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.

Other Redmi K30S Ultra (China) builds

Device page →
DeviceVersionAndroidBranchReleased
Redmi K30S UltraChina · apolloV14.0.5.0.SJDCNXM
MIUI 14Stable
12.0Stable
Redmi K30S UltraChina · apolloV13.1.22.10.24.DEV
MIUI 13.1Public Beta
12.0Public Beta
Redmi K30S UltraChina · apollo22.3.23
MIUI BetaWeekly
12.0Weekly
Redmi K30S UltraChina · apolloV13.0.3.1.15.DEV
MIUI 13Public Beta
12.0Public Beta
Redmi K30S UltraChina · apollo22.1.19
MIUI BetaWeekly
12.0Weekly

Redmi K30S Ultra firmware for other regions

Frequently asked questions

Is V12.5.3.0.RJDCNXM an official Redmi K30S Ultra update?
Yes. V12.5.3.0.RJDCNXM is an official Stable Beta MIUI 12.5 build for the Redmi K30S Ultra (China), released by Xiaomi on August 10, 2021. The download links point directly to Xiaomi’s update servers.
Which Android version does V12.5.3.0.RJDCNXM use?
This firmware is based on Android 11.0.
Will installing V12.5.3.0.RJDCNXM 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 (apollo). Cross-region flashing requires an unlocked bootloader and can cause problems.