Xiaomi smartphones are famous for their functionality, but sometimes even the most reliable devices like the Redmi Note 9 Pro require serious software intervention. Situations can vary: a failed update, a system failure, an account lock or a banal desire to change the region to get early versions of Android.
This method is considered the most reliable, as it allows you to install a completely Global or China version of the firmware, bypassing restrictions. OTA-You don't have to be an experienced engineer to do this, but you need to be very careful with the sequence and the detail, and a mistake at any stage can cause the device to fail, so we'll go through each step in as much detail as possible.
Unlike an over-the-air update, a PC and USB cable method requires pre-filing files and setting up environments. We’ll look at the process of installing the necessary drivers, putting your smartphone into Fastboot mode, and working directly with the Mi Flash Tool utility. This guide will help you bring your gadget back to life or get the desired version of the operating system.
Preparation of the workplace and necessary files
Before you start any manipulation of the Redmi Note 9 Pro system partition, it is critical to assemble all the components. Without the right set of tools, the process can stop halfway or, worse, lead to a brick.
You'll need to download the official firmware for your model. It's important not to confuse the versions: the global market is designed to build with the Global label, and the Chinese one is China. The firmware file usually has the.zip extension, but to work with the computer it will need to be unpacked to get a folder with many files inside.
- 📱 Smartphone Redmi Note 9 Pro with a charged battery (minimum) 50-60%).
- 💻 Personal computer or laptop with Windows operating system 10/11.
- 🔌 Original or quality cable USB Type-C with data transfer.
- 💾 Fastboot version and Mi Flash Tool.
⚠️ Warning: Before starting the procedure, be sure to back up all important data.The Fastboot firmware process completely erases the device's internal memory, including photos, contacts and apps.
It is also important to ensure that there is a stable USB-It is desirable to use connectors located on the motherboard behind the system unit, and not on the front panel or through the USB-Hub to prevent loss of contact at critical time of data recording.
Installation of ADB and Fastboot drivers
The computer will not be able to interact with the Redmi Note 9 Pro at a low level without special drivers. Windows standard tools often cannot correctly identify the device in bootloader mode. To solve this problem, the ADB and Fastboot Tools package, which contains the necessary signatures, is used.
There is a universal installation method that works for most cases: Download the archive with the tools of the Android SDK platform or the specialized Xiaomi USB Driver installer. Once the installer is launched, follow the on-screen instructions agreeing to install all components, including the Android Bootloader Interface.
You can check the success of the installation through Device Manager. Connect the phone in Fastboot mode (clamping the volume button when turned on) to the PC. The list of equipment should appear Xiaomi or Android device without yellow exclamation points. If the error icon is present, the driver is installed incorrectly, and the procedure should be repeated.
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If the driver is not automatically installed, try right-clicking on an unknown device in Device Manager, select Update Driver → Select from the list of available → Xiaomi → Android Bootloader Interface.
Download and prepare firmware
Choosing the right software version is key to success. There are various modifications available for the Redmi Note 9 Pro (codename curtana), and you need a Fastboot version that differs from Recovery in that it is designed to run through a computer rather than a phone menu.
The firmware file weighs about 3-4 GB: Once you download the archive, you have to unpack it, and inside you'll see a lot of files, and there's a lot of files that you'll see. flash_all.bat, Images and other system scripts. The path to the firmware folder should not contain Cyrillic characters or spaces, otherwise the Mi Flash utility may give an error when reading paths.
| Parameter | Description | Requirement |
|---|---|---|
| Type of firmware | Fastboot ROM | I'll be sure. |
| Region | Global / EU / China | By choice of the user |
| Expansion | .tgz (archive) | Demands unpacking. |
| The path to files | No spaces and Cyrillic. |
Make sure the Android and MIUI version in the downloaded file meets your expectations or is newer than the current one. rollback to the older version is only possible with the bootloader unlocked and using special commands, which is a more complicated procedure.
Translation of the smartphone to Fastboot mode
To start the data recording process, the phone must be in a special debugging mode known as Fastboot. In this state, the device screen usually displays the Xiaomi logo with a picture of a hare repairing an android and the inscription FASTBOOT.
Turn off the smartphone completely. Then press the Volume Down button and, without letting it go, connect the USB cable to the computer. Hold the button until the characteristic image appears on the screen. If the phone turns on as usual, then the button was released too early or was not clamped before the cable is connected.
⚠️ Warning: If the screen says "Locked" in orange, it means that the bootloader is locked. ROM You will first need to unlock the bootloader through the official Mi Unlock utility, otherwise the process will end in error.
In some cases, if the standard method doesn't work, you can use the command via ADB if the phone is switched on and debugging. Connect the phone as normal, allow debugging over USB, and type the command adb reboot bootloader into the command line. The device will reboot itself in the desired mode.
☑️ Pre-firmware check
The process of firmware through the Mi Flash Tool
Now, to the most critical step, run the Mi Flash Tool on behalf of the administrator. In the utility interface, press the Refresh button. If the drivers are installed correctly, your Redmi Note 9 Pro with the serial number should appear in the list.
Then, click the Select button and specify the path to the folder where you previously unpacked the firmware files. The program will automatically check the integrity of the files. After that, pay attention to the bottom of the window, where there are three firmware mode switches. The choice of mode depends on your goals and the state of the bootloader.
- 🟢 Clean all: Complete data cleanup and firmware installation. bootloader remains in current state (locked or unlocked) Recommended for clean installation.
- 🔴 Save user data: Install firmware with user data saved. Only if the firmware versions are compatible.
- 🔵 Clean all and lock: Complete cleaning and locking of the bootloader. Use only if you put global firmware on a global device. Blocking Chinese firmware on a global device will lead to a brick.
Once you select the mode, press the Flash button, start a recording process that takes 200 to 600 seconds, during which time the progress bar will fill up, and technical messages will appear in the log, do not turn off the cable or touch the phone until the success message appears in green.
What to do if there is a Flash Error error?
Completion and initial setup
Once the process is completed successfully, the Mi Flash Tool will report this, and the phone will automatically restart, and the first boot after the firmware can last longer than usual — up to 5-10 minutes, which is normal, since the system creates new partitions and cache.
When the Redmi Note 9 Pro turns on, you'll see the welcome screen, you'll have to re-select the language, connect to Wi-Fi, and log into your Google or Mi Account, and since the data has been deleted (in Clean all mode), the phone will be like new.
Check the version of the system in the Settings → About phone. Make sure the build number matches the downloaded file. It is also worth checking the main modules: the camera, speaker, fingerprint sensor and communication module to make sure that the device is fully operational.
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After you have firmwareed the Global version on the unlocked bootloader, the system can request a Wi-Fi connection to activate. If this does not happen, check the date and time or try inserting it. SIM-card.