OS3.0.307.0.WOCCNXM is a stable HyperOS 3 update for the Xiaomi 15 (China, codename dada), based on Android 16 and released on Sep 3, 2026. It brings the August 2026 Android security patch.
- Device Xiaomi 15 (
dada) - Region China
- OS HyperOS 3, Android 16
- Branch Stable
- Security patch 2026-08-01
- Build date Aug 24, 2026
- Fingerprint
Xiaomi/dada/dada:16/BP2A.250605.031.A3/16OS3.1.260824.195504728.QCPECN.S:user/release-keys
Download OS3.0.307.0.WOCCNXM
| Type | Size | MD5 | |
|---|---|---|---|
| Recovery ROM (.zip, built-in updater) | 8.5 GB | — | Download |
| Fastboot ROM (.tgz, Mi Flash) | 12.0 GB | — | Download |
What’s New in OS3.0.307.0.WOCCNXM
System
- Updated the security patch to August 2026. Increased system security.
Official release notes published by Xiaomi for this build.
How to Install This Update
Download the Recovery ROM, move it to the internal storage and choose Settings → About phone → (tap the OS card) → three dots → Choose update package. This keeps your data, but only works for a China phone on an older version. For a clean install or a region change, flash the Fastboot ROM with Mi Flash (unlocked bootloader required). Step-by-step instructions are on the Xiaomi 15 firmware page.
Other Xiaomi 15 China Versions
- Older: OS2.0.104.0.VOCCNXM (Jan 21, 2025)
- All Xiaomi 15 firmware for every region
Build data: official Xiaomi servers. Firmware list tracked by XiaomiFirmwareUpdater.