Xiaomi Mi Box S/4K Gets New Stable Android 9 Pie System Update With Build 3139 Featuring Critical Bug Fixes

Xiaomi Mi Box S and Mi Box 4K are on their fourth beta program. The Mi Box S has received several beta programs so far, before finally settling for the stable OTA based on Android 9 Pie. However, seems like the 4th beta program is over and Xiaomi is testing a new Android 9 Pie stable release featuring all the changes and critical bug fixes from the previous betas. The latest update features build number R3139 and bring support for Xiaomi’s peel Mi Remote. This new app helps you control your Android Box using your smartphone.

Peel Mi Remote is an extension for the stock Xiaomi Mi Remote that helps you control all of your Xiaomi devices right from your smartphone. It makes the Mi Remote app truly universal for TV and set-top box. However, you still need an infrared IR blaster on your Xiaomi smartphone in order to use the app.

Apart from Peel Mi remote integration, the latest Android 9 Pie stable OTA also brings compatibility for more Bluetooth Gamepads. Furthermore, build R-3139 full OTA is a system update rolling out on both – beta and stable channels. So even if you are a beta tester, you should download the previous R3138 update and receive a new R-3139 system update.


R-3139 build resolves the following critical issues:

  1. Supporting peel MI remote which helps you control your MiBox from your smartphone
  2. Compatible with more BT Gamepads

One of the previous updates in the OTA4 Beta program featured support for Xiaomi’s new Peel Mi Remote app. It also fixed some bugs such as green screen issues and USB issues. You can also expect these critical bug fixes in the latest stable Android 9 Pie OTA release for Xiaomi Mi Box S/4K.

How to download Mi Box S/4K new stable Android 9 Pie OTA Update with build 3139?

The OTA for stable channel can be received by going to settings > system updates > download OTA update manually on your Xiaomi Mi Box S/4K. This is the same update as the previous OTA 4 Beta 2 build 3138, but for the stable channel.

Here we have listed the latest beta update based on Android 9 Pie with build OTA4 beta 2 R3138 for the Xiaomi Mi Box S and 4K. This is the full firmware (or full OTA update). So even if your device is on a stable build or a previous beta build, you can still manually install the new OTA zip via recovery method listed below. The full OTA comes in a huge package of 678 MB in size.

Note: Once you are on the latest beta, you should receive a stable system update from settings > system update.


  • Latest Mi Box S/4K Android 9 Pie Stable OTA | Download 3139 zip (coming soon…)
  • Mi Box S/4K Android 9 Pie OTA 4 Beta 2 | Download 3138 zip (direct link)

The OTA update download link comes directly from Android’s repository. This is the full OTA update zip which can easily be sideloaded onto Mi Box S/4K via stock recovery. More OTA updates coming up. Stay tuned!


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