Xiaomi Mi Mix 4 get a new stable update with MIUI 12.5.9
Xiaomi launched the Mi Mix 4 in August this year with Android 11 based MIUI 12.5 out of the box. The company decided to bump the skin version to MIUI 12.5.9 with the latest stable software update.
The build number will be changed to 12.5.9.0.RKMCNXM after flashing the update weighing 715 MB in size. Regarding changes, the package tends to resolve some bugs in the system, status bar, and notification shade. On top of it enhances the security by adding the September 2021 security patch. Refer to the changelog below to know the precise details.
Changelog
System
Adds support for Xiaomi True Wireless Noise Cancelling Headphones 3 Pro spatial audio function
Optimizes and update Google security patch (2021#09) to improve system security
Lock screen
Fix the issue of flashing black bars occasionally when unlocking the fingerprint
Status bar, Notification shade
Fixes the issue of floating notifications flickering abnormally due to the avatar space
Fix the anomaly that the round corners of the floating notification are missing
Fix the problem of occasional background abnormality when receiving a floating notification under the tripartite theme
Fixes an issue where the notification bar cannot draw down in full screen when using the three-party theme
As usual, the OTA update is having an incremental rollout. Therefore, it may take a while to reach all units. Alternatively, you can also track the update manually. To do this, open the Settings app > Software update > Check for update.