Many Xiaomi smartphone users, when faced with serious software failures or wanting to reflash the device, stumble upon the mysterious expression “a hare fixes Android”, which has nothing to do with animals, but is the slang name of the popular utility Mi Flash Tool. This is the software tool used by service centers and advanced enthusiasts to deep restore the Android operating system.
The essence of the process is that the phone is transferred to a special Fastboot mode, where the logo of the hare (or android repairing robot) signals readiness for firmware through the phone. USB-Unlike the usual “over the air” update, this method allows you to completely replace the system partition, fix bootloader errors and even delete forgotten passwords. Understanding how this tool works is critical for Xiaomi owners, as it is often the only way to save the brick».
In this article, we will take a closer look at what lies behind the popular name, how to properly prepare a computer and a smartphone, and look at common mistakes, and learn why this method is considered a “heavy artillery” in the world of mobile device repair and what risks it carries when used ineptly.
Origin of the term and the essence of the Mi Flash Tool utility
The term “hare” originated from the visual design of the Mi Flash Tool interface in early versions or from the Fastboot mode logo, which on some devices was displayed as a rabbit in an orange hat repairing an android. In fact, the Mi Flash Tool is an official tool from Xiaomi designed to firmware devices in Fastboot mode. It runs on computers running the Windows operating system and requires the presence of ADB and Fastboot drivers installed.
The main function of the utility is to record the system image (.img) directly to the memory of the smartphone, bypassing the standard update mechanisms. This allows not only to update the Android version, but also to completely clean the device from any changes made by the user or malware. The program can work with both official firmware and custom builds, if they are adapted to the fast boot mode.
Why the hare?
Using this tool requires a certain amount of technical literacy. Unlike just copying files, it's a low-level data recorder; a mistake in choosing a model or firmware type can lead to a complete failure of the device; however, when approached correctly, the hare is a powerful resuscitation tool.
Fastboot mode: how the phone turns into a “hare”
For the hare to work, Xiaomi's smartphone must be put into Fastboot mode, a low-level state in which the device waits for commands from the computer to perform service operations. In this mode, the Android operating system does not boot, but the screen displays a characteristic picture of a hare repairing a robot, and the inscription FASTBOOT in orange, which is where the popular name for the process comes from.
The transition to this mode is carried out by a combination of physical buttons. Usually you need to turn off the smartphone completely, then press the Volume Down button and connect at the same time. USB-You need to hold the button until the image of the hare appears. Some models may require a charger or the use of the original cable.
In Fastboot mode, the following features are available:
- 🔧 Complete flashing of the device with cleaning of all data.
- 🔓 Unlock the bootloader (requires a separate permission from Xiaomi).
- 🔄 Reverse to an older version of Android (Downgrade).
- 🛠 Testing of hardware components (screen, memory, sensors).
💡
Use only the original. USB-Cheap charging cables often don't have data lines, which means your computer won't see your phone in Fastboot mode.
It's important to understand that Fastboot mode is different from Recovery mode, where Recovery is managed through menus on the phone screen, while Fastboot is controlled exclusively by commands from the computer through a rabbit program, which makes the process more powerful but also more risky for inexperienced users.
Preparation of the computer and installation of drivers
Before the bunny can fix your Android, you need to properly prepare the workstation. The Mi Flash Tool runs exclusively on Windows (versions 7, 8, 10, 11). On macOS or Linux, you can not use the standard version of this utility without complex emulators. The first step is to download the current version of the program from the official website or trusted forums.
The critical step is to install drivers. The computer must correctly recognize the device in Fastboot mode. Often Windows automatically installs standard drivers, but Xiaomi requires specific Qualcomms to work reliably. HS-USB QDLoader or Xiaomi USB Driver: If the device manager defines the phone as an “Unknown Device” or «QHSUSB_BULK», firmware won't start.
The preparation process includes the following steps:
- 💾 Download the archive with firmware (format.tgz, not.zip) for a specific model.
- 📂 Unpacking the firmware archive into the root of the disk (the path should not contain Cyrillic).
- 🔌 Installation of drivers ADB, Fastboot and Xiaomi USB Driver.
- 🔋 Charging your phone to at least 60% to avoid power outages.
☑️ Checklist before firmware
Notice the path to the firmware files. The hare program often refuses to work if there are Russian letters or spaces on the way to the folder: C:\Xiaomi\ROM\gemini_fastboot_global_.... Compliance with this rule will save you from many mistakes when starting the process.
Step-by-step: how to start the recovery process
After all the preparatory steps, the moment of truth comes: Launch the Mi Flash Tool on behalf of the administrator. In the main window, you will see the field for selecting the firmware file and the control button. Press the Select button (or "Select") and specify the path to the unpacked firmware folder. The program automatically reads the images file and displays the device model.
Connect your phone in Fastboot mode to your computer. Press the Refresh button in the program. If the drivers are installed correctly, your device's serial number will appear in the list. You now need to select the firmware method in the lower right corner of the window, and here lies the most important thing that determines the fate of the data on the phone.
There are three modes of operation that should be chosen with caution:
- Clean all is a complete cleanup. It removes all data and partitions, then it puts a clean system in, the most reliable way to fix the phone.
- Save user data is an attempt to save data. It flashes through the system without touching the user partition. It only works if the firmware versions are compatible.
- Clean all and lock – Clean and lock the bootloader. Use only if you return the phone to its original state for sale or warranty.
💡
Never select "Clean all and lock" if you are flashing a phone with an unlocked global firmware loader into Chinese or vice versa.
Once you select the mode, press Flash. You start recording in 200 to 500 seconds, you can't turn off the cable, you can't turn off the computer, you can't interfere with the program, you can change the status from "Flashing" to "Success." Once you're done, the phone automatically restarts.
Typical errors and methods of their elimination
The firmware process through the hare is not always smooth. Users often encounter error codes that can scare the beginner. The most common bug is Flash Error or Missmatching image and device. This means that the firmware is chosen for the wrong phone model. For example, trying to flash the Redmi Note 9 Pro with the firmware from Redmi Note 9 (without the Pro) is guaranteed to crash.
Another common problem is the Not enough space or Storage limit error, which can occur if you have a newer version of Android on your phone and you try to roll back to the old one, and the partitions are not compatible, and in such cases only Clean all mode, which remarks the memory, helps. Also, there is a frequent error Can not receive hello packet, which indicates problems with drivers or USB-port.
Table of common errors and their solutions:
| Code/Error text | Probable cause | Decision-making |
|---|---|---|
| Missmatching image | Wrong firmware model | Check the codename model (e.g. guacamole) and download the correct ROM |
| Not enough space | Conflict of memory sections | Use the "Clean All" mode or update Qualcomm drivers |
| Can not receive hello packet | The problem of USB connection | Replace the cable, change the USB port, reinstall the drivers |
| Flash Error (Red text) | Interrupt or failure of recording | Do not interrupt the process, check the battery, use another PC |
If the process is stuck at a certain percentage (e.g. 15% or 88%) for more than 10 minutes, the most likely failure is that the cable should be gently turned off, the battery removed (if possible), or the power button pressed for 15 seconds to restart, and try again by changing the USB port.
Data security and blocking of Mi Account
When using a hare to repair Android, it is important to keep data protection in mind. Clean all removes all photos, contacts and applications irrevocably. After this procedure, you can not restore them with any standard means. Therefore, pre-backup to a cloud service or computer is a must-have, often forgotten in a hurry.
Special attention should be paid to blocking Mi Account (Mi Cloud), if before the firmware on the phone was entered Xiaomi account and enabled the function "Find the device", then after the firmware the phone will require you to enter the password from this account on the first activation, this is protection against theft. If you forget the password, the phone will turn into a "brick" that can not be used.
⚠️ Note: Firmware via the Mi Flash Tool with the "Clean all and lock" mode on a device with an unlocked bootloader can lead to locking of the device if the firmware region does not coincide with the bootloader region.
There is also a risk of IMEI blocking when using informal methods of unlocking or firmware custom ROMs with the wrong settings. Official firmware through the “hare” with original images is usually safe for communication modules, but experiments with modified assemblies always carry the risk of network loss.