How do I install OS1.0.21.0.ULFJPXM on Redmi K50 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 OS1.0.21.0.ULFJPXM 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, OS1.0.21.0.ULFJPXM is the version shown. Check FirmwareMirror regularly for newer versions of Redmi K50 Ultra China firmware.

Download OS1.0.21.0.ULFJPXM for Redmi K50 Ultra China

What's New

[System]Updated the security patch to November 2025. Increased system security.

Android Version

12.0

File Size

5.2 GB

Release Date

Nov 24, 2025

Flash Method

Recovery

Download ROM

Available

Download Now

File Size: 5.2 GB

Mirror Downloads (11)

Mirror 1 Mirror 2 Mirror 3 Mirror 4 Mirror 5 Mirror 6 Mirror 7 Mirror 8 Mirror 9 Mirror 10 Mirror 11

11 mirror(s) available • Click any button to download

Verification & Details

MD5 Checksum:

f33cce182a9ae9052a07e363f1cb7275

Package Name:

miui_DITINGJPGlobal_OS1.0.21.0.ULFJPXM_f33cce182a_14.0.zip

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