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Xiaomi Civi 1S
HyperOS 1.0StableChina

Xiaomi Civi 1S HyperOS 1.0 OS1.0.12.0.ULPCNXM

Stable firmware for the China Xiaomi Civi 1S (zijin), released February 19, 2025.

Download OS1.0.12.0.ULPCNXM

Recovery ROM (OTA .zip) · 5.7 GB Install from the phone’s updater app — keeps your data.
MD5: cac67dee4aae6448a41a5dc0ad42f971
Download
Fastboot ROM (.tgz) · 7.1 GB Full image for Mi Flash Tool — clean install, unbrick or downgrade.
MD5: 9001687e75fb9db45159b7ec569fab74
Download

Files are served from Xiaomi’s official servers. Compare the MD5 checksum after downloading to make sure the file is complete and untouched.

Firmware details

Device
Xiaomi Civi 1S
Codename
zijin
Region
China
Version
OS1.0.12.0.ULPCNXM
OS
HyperOS 1.0
Android
14.0
Branch
Stable
Released
Feb 19, 2025
Package
Recovery 5.7 GB / Fastboot 7.1 GB

How to install OS1.0.12.0.ULPCNXM

Recovery ROM (recommended, keeps data)

  1. Back up your important data and charge the phone to at least 50%.
  2. Download the Recovery ROM above on your Xiaomi Civi 1S.
  3. Open Settings → About phone and tap the HyperOS version card.
  4. Tap the ⋮ menu → Choose update package and select the downloaded .zip file.
  5. Wait for verification, then tap Reboot now. The update takes 10–20 minutes.

Fastboot ROM (clean install, needs unlocked bootloader)

  1. Make sure the bootloader is unlocked and install Mi Flash Tool plus the Xiaomi USB drivers on a Windows PC.
  2. Download and extract the Fastboot ROM (.tgz) to a short path such as C:\rom.
  3. Power off the phone, hold Volume Down + Power to enter Fastboot mode and connect it via USB.
  4. In Mi Flash Tool select the extracted folder, choose clean all (wipes data) and avoid “clean all and lock” unless you want to relock.
  5. Click Flash and wait until the tool shows success; the phone reboots automatically.

Other Xiaomi Civi 1S (China) builds

Device page →
DeviceVersionAndroidBranchReleased
Xiaomi Civi 1SChina · zijinOS1.0.1.0.ULPCNXM
HyperOS 1.0Stable Beta
14.0Stable Beta
Xiaomi Civi 1SChina · zijinV14.0.23.7.31.DEV
MIUI 14Public Beta
13.0Public Beta
Xiaomi Civi 1SChina · zijinV14.0.22.12.5.DEV
MIUI 14Public Beta
13.0Public Beta

Frequently asked questions

Is OS1.0.12.0.ULPCNXM an official Xiaomi Civi 1S update?
Yes. OS1.0.12.0.ULPCNXM is an official Stable HyperOS 1.0 build for the Xiaomi Civi 1S (China), released by Xiaomi on February 19, 2025. The download links point directly to Xiaomi’s update servers.
Which Android version does OS1.0.12.0.ULPCNXM use?
This firmware is based on Android 14.0.
Will installing OS1.0.12.0.ULPCNXM erase my data?
Installing the Recovery package through the updater app keeps your apps and data. Flashing the Fastboot package with “clean all” wipes the phone — back up first.
Can I install this on another region’s device?
Only install firmware that matches your device’s region (China) and codename (zijin). Cross-region flashing requires an unlocked bootloader and can cause problems.