How do I install OS3.0.309.0.WOACNXM on Xiaomi 15 Ultra China?

Download the ROM file, verify the MD5 checksum, unlock your bootloader, and use Mi Unlock Tool or Fastboot to flash the firmware. Ensure your device is fully charged before proceeding.

Is OS3.0.309.0.WOACNXM stable for daily use?

This is an official firmware release. All official releases from FirmwareMirror are stable and tested. Always backup your data before flashing any firmware.

What should I do before flashing this firmware?

1. Backup all your data, 2. Charge your device to at least 80%, 3. Verify the MD5 checksum, 4. Download from FirmwareMirror, 5. Follow official flashing instructions carefully.

Is this firmware the latest version?

Yes, OS3.0.309.0.WOACNXM is the version shown. Check FirmwareMirror regularly for newer versions of Xiaomi 15 Ultra China firmware.

Xiaomi 15 Ultra China

Name: OS3.0.309.0.WOACNXM for Xiaomi 15 Ultra China
Availability: InStock
Author: Xiaomi

Brand Xiaomi

Codename xuanyuan

Version OS3.0.309.0.WOACNXM

Region China

Branch Stable

Android Version

16.0

File Size

10 GB

Release Date

Jul 09, 2026

Flash Method

Recovery

Download ROM

Available

Download Now

File Size: 10 GB

Verification & Details

MD5 Checksum:

4388015afd369b0a896883ad8d4b893b

Back to Xiaomi 15 Ultra China