Is KXDCNBF21.0 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, KXDCNBF21.0 is the version shown. Check FirmwareMirror regularly for newer versions of MI 3 / Mi 4 China firmware.

Download MI 3 / Mi 4 China ROM - KXDCNBF21.0 (Global)

What's New

Bug fixes and system optimizations.

Android Version

12.0

File Size

700.5 MB

Release Date

Oct 22, 2014

Flash Method

Fastboot

Download ROM

Available

Download Now

File Size: 0.68 GB

Mirror Downloads (5)

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

Verification & Details

MD5 Checksum:

d4f7bd9bcfff25f19d64d25ea8a8d978

Package Name:

cancro_images_KXDCNBF21.0_4.4_cn_d4f7bd9bcf.tgz

How to Flash Fastboot on MI 3 / Mi 4 China

Please follow these steps carefully to install the KXDCNBF21.0 update safely. Ensure your device has at least 60% battery.

Ensure the bootloader of your MI 3 / Mi 4 China is unlocked.
Download the official Mi Flash Tool and extract it on your PC.
Boot your device into Fastboot mode by holding the Volume Down + Power buttons simultaneously.
Connect the smartphone to your PC using a reliable USB cable.
Extract the downloaded KXDCNBF21.0 firmware archive (.tgz file).
Open Mi Flash Tool, select the extracted firmware folder, and click 'Flash'.

Back to MI 3 / Mi 4 China

Download MI 3 / Mi 4 China Firmware (KXDCNBF21.0)