Xiaomi 12S China OS1.0.24.1.8.DEV Update

OS1.0.24.1.8.DEV is a public beta HyperOS 1 update for the Xiaomi 12S (China, codename mayfly), based on Android 14 and released on Jan 12, 2024.

• Device Xiaomi 12S (mayfly)
• Region China
• OS HyperOS 1, Android 14
• Branch Public beta

Is this the right ROM for your phone? Paste the version from Settings → About phone to see its region, Android version and whether a newer build exists.

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Download OS1.0.24.1.8.DEV

What’s New in OS1.0.24.1.8.DEV

Xiaomi hasn’t published release notes for this build. Updates like this usually contain bug fixes, stability improvements and, if listed above, a new security patch.

How to Install This Update

Download the Recovery ROM, move it to the internal storage and choose Settings → About phone → tap the OS card → tap the HyperOS logo 7–10 times → three dots → Choose update package. This keeps your data, but only works for a China phone on an older version. For a clean install or a region change, flash the Fastboot ROM with Mi Flash (unlocked bootloader required). Step-by-step instructions are on the Xiaomi 12S firmware page. Installing an older version? Read how to check anti-rollback first; switching region? See ROM region codes.

Other Xiaomi 12S China Versions

• Newer: OS3.0.3.0.VLTCNXM (Mar 23, 2026)
• Older: V14.0.4.0.TLTCNXM (Dec 28, 2022)
• All Xiaomi 12S firmware for every region

Build data: official Xiaomi servers. Firmware list tracked by XiaomiFirmwareUpdater.