Did you know Xiaomi used under-display fingerprint scanner back in 2016 with Mi 5s? Of course the performance of those first gen ultrasonic sensor was horrible. Due to the high failure rates, the Chinese OEM postponed the plan and went back to capacitive module with Mi 6.

Mi 6: Notice the front mounted fingerprint scanner

Shift to 2019, and you can find plenty of Xiaomi and Redmi devices with frontal fingerprint reader hidden beneath the screen. Be it Mi 9 or Redmi K20 Pro, the company now actively promotes the technology, although they are optical instead of ultrasonic.

Talking about Mi 6, the phone had a patchy history in terms of software updates. It was launched with MIUI 8 based on Android 7.1 Nougat, and eventually upgraded to Oreo (8.0) with new iterations of MIUI. But then there was a long gap and rumors about possible abandonment.

The controversial post from a Xiaomi engineer regarding keeping Mi 6 with Oreo

Nevertheless, Xiaomi delivered stable Android Pie in the form of MIUI 10.4 update for Mi 6 after a series of closed and public beta builds. Interestingly they did not list it on their official download page till date. Apart from a few users, the OTA was also not available widely.

Did Xiami pull back the initial update, like they did with Mi MIX 2? Apparently yes, as Mi 6 units across the world are getting a new update with July security patches. The internal changelog does mention this build as ‘stable’ Android Pie update.



– Stable MIUI based on Android Pie


– Optimization: Updated Android Security Patch to July 2019. Increased system security.

App lock

– New: Locking Google contacts is available now

  • Device: Mi 6
  • Codename: sagit
  • Channel: Global Stable
  • Version: V10.4.2.0.PCAMIXM
  • Android: 9.0
    • Type: Recovery
      • Download: Link
      • MD5: 8870a6a0c4c19a5a49bf1ece5d53dd4d

On the other hand, Indian Redmi K20 Pro is also receiving a new incremental update that brings plenty of new features and fixes. However, the security patch level does not change a bit which means Indian users are still stuck with June patch.



– Optimization: Reduce noise at low volume for earphone and speakers

App lock

– New: Locking Google contacts is available now

Lockscreen, status bar, Notification shade

– Fix: Fingerprint icon didn’t always appear on the Lock screen

Game speed booster

– Fix: Hands-free call duration wasn’t displayed correctly in Game Turbo

Mi Cloud

– Optimization: Improved sync across multiple devices

The Chinese Redmi K20 Pro got July patches a long time ago, while the semi-public Android Q beta bundled September patches for the phone. Guess the team is busy preparing the stable update of Android 10, so delivering security patches on Pie is not in their priority list.

  • Device: Redmi K20 Pro
  • Codename: raphael
  • Channel: Global (India) Stable
  • Version: V10.3.5.0.PFKINXM
  • Android: 9.0
    • Type: Recovery
      • Download: Link
      • MD5: f924323a4b38c86511e778fd720cb23d

Credit goes to yshalsager and the Xiaomi Firmware Updater project for tracking the OTA update URLs.

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Kingshuk De
896 Posts

I came from a mixed background of Statistics and Computer Science. My research domains included embedded computer systems, mobile computing and delay tolerant networks in post-disaster scenarios. Apart from tinkering with gadgets or building hackintosh, I like to hop on various subreddits and forums like MyDigitalLife and XDA.

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