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Redmi 9 / 9 Activ
MIUI 12StableIndia

Redmi 9 / 9 Activ MIUI 12 V12.0.18.0.QCTINXM

Stable firmware for the India Redmi 9 / 9 Activ (cattail_in_global), released September 2, 2022.

Download V12.0.18.0.QCTINXM

Recovery ROM (OTA .zip) · 1.8 GB Install from the phone’s updater app — keeps your data.
MD5: 9eefea973530703e15188246d4d56597
Download
Fastboot ROM (.tgz) · 2.6 GB Full image for Mi Flash Tool — clean install, unbrick or downgrade.
MD5: b1c7409a052beb47568e95111f81f366
Download

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 9 / 9 Activ
Codename
cattail_in_global
Region
India
Version
V12.0.18.0.QCTINXM
OS
MIUI 12
Android
10.0
Branch
Stable
Released
Sep 2, 2022
Package
Recovery 1.8 GB / Fastboot 2.6 GB

How to install V12.0.18.0.QCTINXM

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 9 / 9 Activ.
  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.

Frequently asked questions

Is V12.0.18.0.QCTINXM an official Redmi 9 / 9 Activ update?
Yes. V12.0.18.0.QCTINXM is an official Stable MIUI 12 build for the Redmi 9 / 9 Activ (India), released by Xiaomi on September 2, 2022. The download links point directly to Xiaomi’s update servers.
Which Android version does V12.0.18.0.QCTINXM use?
This firmware is based on Android 10.0.
Will installing V12.0.18.0.QCTINXM 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 (India) and codename (cattail_in_global). Cross-region flashing requires an unlocked bootloader and can cause problems.