Is V9.1.1.0.NAJCNEI 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, V9.1.1.0.NAJCNEI is the version shown. Check FirmwareMirror regularly for newer versions of MI 4S China firmware.

Download MI 4S China ROM - V9.1.1.0.NAJCNEI (Global)

What's New

[MIUI9 Lightning fast]New iconsDeep-level system optimizationsSmart app launcherHome screen assistantAdded improved image searchIntroducing Split screenSimpler Home screen editingSmart notifications filterShortcuts for frequently used features on the left side of the Lock screenImproved readability for the start page of MessagingRevamped and simplified 50+ featuresIntroducing MIUI LabsImage search and Smart app launcher are turned on in MIUI Labs(Turn the filter for notifications on and off in t...

Android Version

12.0

File Size

1.3 GB

Release Date

Oct 30, 2017

Flash Method

Fastboot

Download ROM

Available

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File Size: 1.3 GB

Mirror Downloads (10)

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Verification & Details

MD5 Checksum:

46ff48b7810b2327584f8591d434b6e8

Package Name:

aqua_images_V9.1.1.0.NAJCNEI_20171030.0000.00_7.0_cn_46ff48b781.tgz

How to Flash Fastboot on MI 4S China

Please follow these steps carefully to install the V9.1.1.0.NAJCNEI update safely. Ensure your device has at least 60% battery.

Ensure the bootloader of your MI 4S 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 V9.1.1.0.NAJCNEI firmware archive (.tgz file).
Open Mi Flash Tool, select the extracted firmware folder, and click 'Flash'.

Back to MI 4S China

Download MI 4S China Firmware (V9.1.1.0.NAJCNEI)