[Xiaomi Mi 9 Guides, News, & Discussion] yshalsager:
New MIUI Stable Fastboot update available!​

Device: Mi 9 China (cepheus)

Version: V12.5.3.0.RFACNXM | 11.0

Release Date: 2021-05-12

Filesize: 4.1 GB

MD5:

2810d0e29a149d7946662f04e31edfd7

Download: Here

Incremental update: Unavailable

Changelog:

[System]
New: Response to gestures is now instant.
New: With 20 times more rendering power, there are now few limits to what you can see on your screen.
New: With custom device model adjustments, any phone becomes faster after the upgrade.
Optimization: MIUI became lighter, faster, and more durable.
Stable MIUI based on Android 11
Updated Android Security Patch to April 2021. Increased system security.
[System animations]
New: A new animation framework renders movement more realistically.
New: New UI design is focused on visualization and making your interaction with the device more lifelike.
[System sounds]
New: Nature mix is a new exciting way of creating your own notification sound system.
New: Hundreds of system sounds that represent animals from all around the world.
[Super wallpapers]
New: Mount Siguniang super wallpaper.
[Privacy protection]
New: Now you can see what apps access your clipboard and control access.
New: Using approximate location adds up points to privacy protection.
New: You can now manage sensitive permissions and related app behavior independently.
New: The behavior of web pages is also tracked now, which helps you to block unwanted and malicious actions.
New: Now it's up to you who and when can track your online behavior.
New: All apps now come with a security statement from GetApps.
New: Privacy risk scanner.
New: Control which apps access and delete items from your Gallery.
New: A comprehensive overview of all sensitive permissions.
New: You'll be notified whenever high-risk permissions are used and will be able to block the corresponding actions.
Optimization: An all-new privacy protection page.
[Notes]
New: Compose mind maps with complex structures.
New: New tools for doodling and sketching.
New: Press and hold a sketch to adjust the strokes automatically.
New: A gesture shortcut now allows you to create notes, tasks, and excerpts anywhere.
New: Excerpts save text, URLs, and images to Notes in a few simple taps.
New: Dynamic layouts make bring the typography in Notes to a new level.
All-new Notes.
[MIUI+]
You can combine your phone and computer into a single working station.
You can view MIUI notifications and open phone apps on your computer.
Apps from your phone can be handed off to your computer.
The items copied on a phone can now be pasted on the computer and vice versa.
Photos and screenshots from a mobile device can be instantly used on a computer.
Web pages can be seamlessly handed over from one device to another.
You can transfer files to your mobile device using the "MIUI+" panel on your computer.
New "File Manager" and "Notes" for computers.
[Floating windows]
New: Instant messengers now support floating windows.
New: Floating windows can be quickly replaced with fullscreen versions of the apps.
New: App flashcards Show key info when apps are displayed as floating windows.
*Learn more about new features in "Special features".
[Xiaomi Health]
New: You can measure your heart rate using the camera now.
New: Start recording running, walking, and cycling workouts manually, and enjoy lots of online workout classes.
Optimization: Automatic workout recognition is much more accurate now.
[Home screen]
New: "Ripples" animation for downloading apps.
New: "Burst" animation for uninstalling apps.
New: New design for app folders.
New: A vertical layout for Recents.
[Xiaomi Cloud]
New: Convert images to PDF.
New: Password manager allows you to store passwords in the cloud.
New: You can share device location with other people in your family sharing group.
New: Location information can be recorded automatically before the device powers off.
[IME]
New: A more convenient way to move a cursor using the scrollbar.
New: Function buttons support switching between languages and keyboards.
New: You can press and hold the function buttons to access more features.
New: Custom themes for keyboards.
[Themes]
New: Font weight adjustment options for third party fonts.
Optimization: Personalization features for system wallpapers, animations, and sounds.
[Browser]
New: Wallpaper customization in the lite mode.
Optimization: Redesigned Incognito mode.
Optimization: Pages load much faster now.

Note: Older MIUI updates are available Here