Updated on July 27, 2020: Today the device received June 2020 security patch with software version V220.127.116.11.QFACNXM.
Updated on June 24, 2020: Xiaomi rolling the MIUI 12 update for Mi 9 (codenamed cepheus) in China with software version V18.104.22.168.QFACNXM which brings many new features based on Android 10. If you want to try, you can manually install the MIUI 22.214.171.124 China Stable ROM for Mi 9.
It also bundled with May 2020 Android Security Patch level for improved system security and privacy protection. The May 2020 patchset fixes a security vulnerability in the system component that could enable a remote attacker to harm the device system and data. So, it’s recommended to upgrade your handset first. Check out the firmware update changelog below.
The new firmware update brings the all-new MIUI 12 stable version with redesigned system animation, improved UI, a bunch of privacy protection features, floating window, other system optimizations, Xiaomi Health, Control Center, Accessibility, Dark mode, Trips, System, Mi Carrier Services, System, Messaging, Home screen, Camera, Screen Time, Weather, File Manager, Calendar, Notes, Security improvements, Xiaomi Cloud, and others.
Table of Contents
Check for OTA Updates
Xiaomi always roll-out the firmware OTA update in batches and it may take a while to hit all the units completely. So, you can either check for the OTA update manually or can flash the firmware file by following the guide below.
In order to do that, head over to the device Settings > About Phone > Software Update > Check for updates. Alternatively, you can head over to the Software Updater app in order to check for the same. If available, just download and install it using the Wi-Fi network. Make sure to charge your handset at least up to 50%.
If in case, you haven’t received the OTA update yet on your handset, then check out the firmware flashing guide below along with the download links and requirements.
Downloads and Changelog:
How to Install MIUI 12 China Stable ROM for Mi 9 (cepheus)
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 Mi 9 (cepheus) 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
Instructions to Install:
We assume that you’ve followed the downloads and requirements properly. Now, you can proceed to install MIUI 12 China Stable ROM for Mi 9. 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 12 version on your Mi 9 (cepheus) successfully. Feel free to ask in the comments below for any queries.