Xiaomi 15 owners, good news: the global rollout of the stable HyperOS 3 update has begun. The release is arriving in waves, so it may take a few more days before it reaches every device.
The update is identified as HyperOS 3.0.4.0.WOCEUXM and includes the Android security patch dated October 1, 2025. Those patches address multiple vulnerabilities outlined in the Android Security Bulletin. The package is sizable—around 8.2 GB—so plan for a lengthy download and installation.
What to expect
– Stronger security thanks to the latest Android patches
– System-level refinements and under-the-hood stability improvements typical of a major OS update
– Region-specific build numbers may vary, but functionality remains aligned across markets as the rollout expands
How to check for the update
– Open Settings on your Xiaomi 15
– Go to About phone
– Tap HyperOS version (or System update)
– Check for updates and follow the prompts
Before you install
– Connect to a reliable Wi‑Fi network
– Charge your phone to at least 50%
– Free up 10 GB or more of storage to accommodate the download and installation process
– Back up important data, just in case
Availability and rollout
Xiaomi is distributing HyperOS 3 globally in stages, and the company has already outlined its broader rollout plan. If you don’t see the update yet, keep checking over the coming days as availability can differ by region and carrier.
Bottom line: HyperOS 3 brings the Xiaomi 15 up to date with the October 2025 Android security level in a substantial update. If you’ve received the 3.0.4.0.WOCEUXM build, set aside time and storage to install it and enjoy the latest improvements.
