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Redmi K90 Max China OS4.0.5.0.XAACNXM Update

Jeff K.·

OS4.0.5.0.XAACNXM is a stable HyperOS 4 update for the Redmi K90 Max (China, codename prague), based on Android 17 and released on Oct 26, 2026.

  • Device Redmi K90 Max (prague)
  • Region China
  • OS HyperOS 4, Android 17
  • Branch Stable

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.

Download OS4.0.5.0.XAACNXM

Type Size MD5
Recovery ROM (.zip, built-in updater) 8.9 GB 8a4200c881
first 10 chars		 Download
Fastboot ROM (.tgz, Mi Flash) 14.2 GB 3629323b37
first 10 chars		 Download

What’s New in OS4.0.5.0.XAACNXM

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 Redmi K90 Max firmware page. Installing an older version? Read how to check anti-rollback first; switching region? See ROM region codes.

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