Xiaomi 13 Ultra Taiwan OS3.0.304.0.WMATWXM Update

OS3.0.304.0.WMATWXM is a stable HyperOS 3 update for the Xiaomi 13 Ultra (Taiwan, codename ishtar), based on Android 16 and released on Oct 29, 2026.

• Device Xiaomi 13 Ultra (ishtar_tw_global)
• Region Taiwan
• OS HyperOS 3, Android 16
• Branch Stable

Is this the right ROM for your phone? Paste the version from Settings → About phone to see its region, Android version and whether a newer build exists.

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Download OS3.0.304.0.WMATWXM

What’s New in OS3.0.304.0.WMATWXM

Xiaomi hasn’t published release notes for this build. Updates like this usually contain bug fixes, stability improvements and, if listed above, a new security patch.

How to Install This Update

Download the Recovery ROM, move it to the internal storage and choose Settings → About phone → tap the OS card → tap the HyperOS logo 7–10 times → three dots → Choose update package. This keeps your data, but only works for a Taiwan 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 13 Ultra firmware page. Installing an older version? Read how to check anti-rollback first; switching region? See ROM region codes.

Build data: official Xiaomi servers. Firmware list tracked by XiaomiFirmwareUpdater.