Is OS3.0.303.0.WNNCNXM 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.

Is this firmware the latest version?

Yes, OS3.0.303.0.WNNCNXM is the version shown. Check FirmwareMirror regularly for newer versions of Redmi K70 Ultra China firmware.

Download Redmi K70 Ultra China ROM - OS3.0.303.0.WNNCNXM (China)

Android Version

16.0

File Size

7.2 GB

Release Date

Jun 17, 2026

Flash Method

Recovery

Download ROM

Available

Download Now

File Size: 7.2 GB

Verification & Details

MD5 Checksum:

65ddf353d7a51ed64f2ef7c7dd0cf865

How to Flash Recovery on Redmi K70 Ultra China

Please follow these steps carefully to install the OS3.0.303.0.WNNCNXM update safely. Ensure your device has at least 60% battery.

Download the OS3.0.303.0.WNNCNXM Recovery ROM (.zip file).
Transfer the file to the internal storage root directory of your Redmi K70 Ultra China.
Navigate to Settings > About Phone > System Update.
Tap the OS logo 10 times to enable advanced features.
Tap the top-right menu icon and select 'Choose update package'.
Select the downloaded zip file and wait for the automated installation to complete.

Back to Redmi K70 Ultra China

Download Redmi K70 Ultra China Firmware (OS3.0.303.0.WNNCNXM)