How to Sweat Xiaomi Redmi 9A: The Complete Guide

The modern Xiaomi Redmi 9A is a popular budget device that may require reinstalling the operating system over time, and the reasons for this can range from a banal desire to update Android to more serious problems such as “bootloop” or deleting system files. Regardless of motivation, the firmware process requires care and a clear algorithm of actions. In this article, we will discuss all available methods for restoring and updating software.

Before you start taking action, you need to understand that flashing is an interference with the software code of the device. Data reset is an inevitable step in most scenarios, so take care of backing up contacts, photos and important documents. If your device is under warranty, changing the regional version of the software yourself can cause a denial of service. However, if you are ready to take responsibility, let's look at the technical details.

There are several basic ways to bring your phone back to life: through the official Recovery menu, with your computer and the Mi Flash Tool utility, and through the Fastboot mode. The choice of method depends on the current state of your Redmi 9A: whether the screen is turned on, whether the touchscreen is responsive and whether the system boots to the desktop. For beginners, the safest option is to upgrade “over the air” or through the recovery menu, while experienced users are more likely to opt for a full reset via PC.

Preparation for firmware: tools and drivers

The success of the operation depends on 90% on the quality of the workspace and software. You will need a computer running Windows, since most specialized utilities, including the Mi Flash Tool, do not work correctly on macOS or Linux without complex emulators. Quality is also required. USB-cable, preferably original or MFi certified, capable of transmitting data, not just charging the battery.

A critical step is to install the ADB and Fastboot drivers. Without them, the computer simply won't see the smartphone in special mode. Often users find that the device is identified as "Unknown Device" in Task Manager. To avoid this, download the universal Xiaomi driver package and install it before the phone is connected. Drivers ensure stable data exchange between the phone's motherboard and the PC operating system.

⚠️ Warning: Make sure the battery is at least 60% battery power. interruption of the memory sectors recording process due to battery discharge can lead to irreversible damage to the bootloader.

The next version is the firmware file itself. Redmi 9A (codename dandelion) has different versions: Global (global), EU (European), CN (Chinese) and RU (Russian). It is important to choose the file that corresponds to your region or desired localization. Files have the extension.tgz for firmware via PC and.zip for installation through the Recovery menu.

Determination of firmware type and loading modes

Before you start manipulating it is important to understand the terms, so as not to download the wrong file. firmware is divided into two main types by installation method: Recovery and Fastboot. Recovery files have the extension.zip and usually weigh about 2.5-3 GB. They are installed directly through the phone menu without the need to use a computer (although a PC is needed for download).

Fastboot files have a.tgz extension and contain a complete system image, including bootloader and modem partitions. Their size often exceeds 4 GB. This method allows you not only to update the system, but also completely clean the device from traces of the previous OS, which is useful when switching from the Chinese version to the global. Fastboot is a low-level debugging protocol built into the Qualcomm or MediaTek chipset.

Also worth mentioning is the Edl (Emergency Download Mode) mode, which is used for deep recovery of bricks. To enter it on the Redmi 9A, you often need to disassemble the case and close test points on the board, or use special scripts if the bootloader is unlocked.

Method 1: Update via Recovery Menu

This is the easiest and safest way for anyone who has a phone that is switched on and running smoothly. It's perfect for updating the MIUI version without losing personal files if you select the appropriate item, or for a clean installation with a full reset. First download the.zip firmware file and put it in the root of the device's internal memory. Don't put the file in folders, use the root directory to make it easier to find.

Then you go to Recovery mode. To do this, turn off your smartphone and press the Volume Up + Power key combination. Hold the buttons until the Mi logo appears, then let go. You will see a menu with several items in English or Chinese. Navigation is done with volume buttons, and the choice is with the power button.

From the menu, select Wipe Data if you want to clean your phone completely, or go straight to Connect with MIAssistant (for advanced) or Apply Update → Choose from internal storage. Find your firmware file and confirm the installation. The process will take 5 to 15 minutes. Importantly, if you move from Chinese firmware to global, the Wipe Data option is mandatory, otherwise you will experience a cyclical reboot.

Once the installation is complete, the system will suggest restarting. The first run after the firmware can last longer than usual - up to 10 minutes. Don't panic if you see the Android or Mi logo, at which point the applications are optimized and system libraries are set up.

Method 2: Firmware with Mi Flash Tool (Fastboot)

This is a professional method that requires a computer to completely re-mark the device memory, which solves most software errors. First, unpack the downloaded.tgz file into a separate folder on the C disk so that the path is short, such as, C:\rom\. Long paths with Cyrillic can cause errors in the utility.

Launch the Mi Flash Tool on behalf of the administrator. Put your smartphone into Fastboot mode: press Volume Down + Power. Connect your phone to your PC. In the program, press the Refresh button; if the drivers are installed correctly, you will see the serial number of the device. If the number shows an empty field, check the cable or drivers.

Press Select and select the folder with the unpacked firmware. At the bottom of the window, select the firmware mode: Clean all (full clean), Save user data (save data, not recommended when changing regions), or Clean all and lock (clean and lock the bootloader). The last point is dangerous: if you flash the Chinese version on the global and lock the bootloader, the phone will go into a perpetual bootloom.

Recommended mode: Clean all




The path to files: C:\xiaomi_rom\dandelion_global_images\




Status: Device connected

When you select the mode, press Flash. The recording process will begin, progress will be displayed as a percentage. Do not turn off the cable or touch the phone until the green "Success" sign appears. Usually the process takes 300-600 seconds.

⚠️ Warning: When selecting the Clean all and lock option, make sure the firmware version matches the region of the device.Blocking the bootloader with incompatible firmware will turn the phone into a "brick" requiring an authorized Mi Account to unlock.

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Using the Mi Flash Tool gives maximum control over the system, but requires care when choosing the bootloader lock option to avoid locking the device on the account.

Solving errors and problems in firmware

When you run a Redmi 9A firmware, you often run into error codes, and one of the most common is Error: Miss matching image, which means you try to flash firmware from another model or region without proper preparation, like you can't just overlay global firmware over Chinese without Clean All mode.

Another common problem is 9% or 56% freeze in the Mi Flash Tool. USB-You can use a cable or a port. USB 2.0 (black) on the back of the system unit, avoiding front ports and USB-Hubs, and reinstalling drivers in Device Manager can also help.

• 📉 Mistake. 0x80070005: Run the Mi Flash Tool on behalf of the administrator and check for an antivirus that can block the recording.
• 📉 Phone not detected: Try another cable, another USB-port or manually install drivers through Device Manager (update driver) → list out → Android Bootloader Interface).
• 📉 Cycle Boot after firmware: Chances are you haven't done Wipe Data. Go to Recovery and complete a full reset.

If the phone goes into a cyclic reboot and is not included in either Recovery or Fastboot, the bootloader may be damaged, in which case only the EDL mode, which on modern Xiaomi models often requires an authorized service center account or paid forum services, will help.

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Use it. USB-A hub without external power is only a last resort, and for firmware, it is better to connect the device directly to the computer motherboard to ensure stable voltage.

FAQ: Frequently Asked Questions