Is OS1.0.15.0.ULMCNXM 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, OS1.0.15.0.ULMCNXM is the version shown. Check FirmwareMirror regularly for newer versions of POCO F4 firmware.

Download POCO F4 ROM - OS1.0.15.0.ULMCNXM (Global)

What's New

[System]Fix: Improved system stability and user experience

Android Version

12.0

File Size

5.4 GB

Release Date

Mar 24, 2026

Flash Method

Recovery

Download ROM

Available

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File Size: 5.4 GB

Mirror Downloads (10)

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Verification & Details

MD5 Checksum:

945b97531490db7e212a0817bff32422

Package Name:

miui_MUNCH_OS1.0.15.0.ULMCNXM_945b975314_14.0.zip

How to Flash Recovery on POCO F4

Please follow these steps carefully to install the OS1.0.15.0.ULMCNXM update safely. Ensure your device has at least 60% battery.

Download the OS1.0.15.0.ULMCNXM Recovery ROM (.zip file).
Transfer the file to the internal storage root directory of your POCO F4.
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 POCO F4

Download POCO F4 Firmware (OS1.0.15.0.ULMCNXM)