V12.5.3.0.RJSCNXM: Xiaomi Redmi Note 9 Pro 5G China Stable ROM – MIUI

Xiaomi recently unveiled several Redmi series smartphones. Two of these budget-oriented devices are 5G compatible, while one of them still only supports 4G. Among the three devices, the most expensive and best of the lot is the Xiaomi Redmi Note 9 Pro 5G. Let’s take a look at what this device has to offer for us.

If you have bought this device and still not received a new update on your device, then this guide is for you. Here, we will share all the latest China Stable ROM for Redmi Note 9 Pro 5G (gauguin).

If you have not received any new updates to the device recently, then follow up on our guide on how you can check for the software update manually. To do that, head to the Settings -> About Phone and Tap on a Software Update to check for the new version for the Redmi Note 9 Pro 5G.

V12.0.4.0.QJSCNXM: Xiaomi Redmi Note 9 Pro 5G China Stable ROM – MIUI

Redmi Note 9 Pro 5G: Device Overview:

The Redmi Note 9 Pro 5G features a 6.67 inches IPS LCD panel with a 120Hz refresh rate. It also supports HDR10, which is quite rare in the budget segment. In terms of resolution, we 1080 x 2400 pixels with a display that has a 20:9 aspect ratio. The front panel is also protected Gorilla Glass 5 exactly like the backside as this is a glass sandwich phone. Coming to the performance, we get the latest Qualcomm Snapdragon 750 5G, which is an octa-core processor with 2×2.2 GHz Kryo 570 cores and 6×1.8 GHz Kryo 570 cores. It comes with Adreno 619 for all the graphics intensive tasks.

Coming to the cameras, we get to the USP of this device, which is the primary camera on the rear side. It is a quad-camera setup at the back with a 108MP primary sensor paired with an f/1.8 lens, an 8MP ultrawide sensor paired with an f/2.2 lens, a 2MP macro sensor paired with an f/2.4 lens, and finally, we have a 2MP depth sensor paired with an f/2.4 lens. Coming to the front, we get a 16MP selfie camera housed in the hole punch at the screen’s top. This 108 MP sensor is from Samsung, and on paper, this sensor is better than the one we had on the Samsung Galaxy S20 Ultra.

We get two RAM options with the phone: one 6GB variant and another 8GB variant. As for the storage, we get only 128 GB with the 6GB RAM model and 128GB or 256GB with the 8GB RAM model. There is support for even UFS 2.2, which is considered faster than the UFS 2.1 but definitely not in the same league as the UFS 3.0. We also get stereo speakers in this new Redmi Note 9 Pro 5G. In terms of connectivity, we get Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot, Bluetooth 5.1, A2DP, GPS, NFC, Infrared, and USB USB Type-C 2. Powering it all up is a 4,820 mAh battery, which can go from 0% charge to 100% in a rapid time. Officially they claim a full charge is possible in just under an hour. There are three color variants for the Redmi Note 9 Pro 5G: Gray, Blue, and Red/Mint.

Manually Check OTA Updates

Before moving to the guide, we recommend you to first check if the OTA is already available for your device manually. To do that,  go to the phone Settings > About Phone > Software update. Additionally, you can perform this task via the Software Updater app directly. If the software version is available, you can grab it.

Firmware Details and Download

MIUI Version Changelog

  • System
    • Updated Android Security Patch to June 2021. Increased system security.
  • Status bar, Notification shade
    • Fix: Lock screen notification animations froze after the device was unlocked using face data
    • Fix: Notifications flashed in some cases
    • Fix: Floating notifications weren’t displayed correctly in landscape mode
    • Fix: Notification badges weren’t updated for incoming notifications on a locked device


  • Optimization: Updated Android Security Patch to February 2021. Increased system security


  • Optimization: Image quality


  • Optimization: Increased system stability
  • Optimization: Reduced system lag


  • Optimization: Increased system stability
  • Optimization: Reduced system lag

How to Install MIUI China Stable ROM for Redmi Note 9 Pro 5G (gauguin)

Installing the stock ROM or upgrading the MIUI version on Xiaomi devices is comparatively easy. But you should follow all the pre-requirements and downloads below before proceeding.


  • Supported for: Xiaomi Redmi Note 9 Pro 5G (gauguin) only. The device should be running on stock ROM to apply the update.
  • Requires: A PC/Laptop and a USB cable.
  • Backup: Take a full Backup of Phone Data at first to keep the important files safe.
  • Charge: Keep your device charged more than 50%.
  • Mi Flash Tool – Download and Install it on your PC
  • Download ADB and Fastboot Tools on your computer
  • Download Xiaomi USB Drivers and install it on the PC


We recommend to take a full backup first. GetDroidTips will not be held responsible for any type of issue on your device while or after following this guide or even flashing any file. So, proceed at your own risk.

Instructions to Install:

We assume that you’ve followed the downloads and requirements properly. Now, you can proceed to install MIUI China Stable ROM on Redmi Note 9 Pro 5G. Check out the guide link below along with a video tutorial as well.

Guide to Install MIUI ROM on Xiaomi Device [Recovery/Fastboot]

You can check out our full-depth tutorial video as well:

Video Guide on Steps to Flash Xiaomi Device using Fastboot Method

We hope that you’ve updated or installed the latest MIUI version on your Redmi Note 9 Pro 5G (gauguin) successfully. Feel free to ask in the comments below for any queries.

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