Modern Xiaomi, Redmi and POCO smartphones have powerful hardware, but sometimes software requires user intervention. Situations can vary: the device stopped booting, stuck on the logo, or you just want to upgrade to a newer version of MIUI or HyperOS, which has not yet come by air. Installing firmware through a personal computer is the most reliable method that allows you to reanimate the phone even in critical cases.
Unlike an over-the-air update (OTA), the PC method gives you complete control of the process, you can roll back to a more stable version of the system, switch from Chinese regional firmware to a global one, or restore partitions after a failed experiment. However, this process requires care and strict follow-up, as an error at any stage can lead to data loss or maintenance.
Before you start to take action, you need to understand what type of recovery you need. There are two main modes of operation of the bootloader: Recovery and Fastboot. The first is used for simple resets and installations through the menu of the phone itself, the second is a deep system mode, available only when connected to a computer, which allows you to rewrite system partitions clean, and we will consider the second option, because it is the universal solution for most problems.
Preparation of equipment and choice of firmware
The success of the surgery depends on the quality of preparation, 90%. USB-The cable, preferably original or certified, because cheap cables often do not provide stable data transfer, but only charging. The computer must be running the Windows operating system, since the main toolkit of developers is sharpened for this platform. It is also critical to have a battery charge of at least 60% so that the device does not turn off at the most inopportune moment.
The next step is to find the right firmware file. Official distributions for computer installation have the extension.zip (for Recovery) or.tgz (for Fastboot). We need an archive with the extension.tgz, because it contains images of all parts of the system, you should only download files from trusted resources, such as the official portal MIUI Download or authoritative forums, to avoid the introduction of malicious code.
- 📱 Make sure the smartphone model matches the firmware you have chosen (e.g., the Redmi Note 10 Pro and Redmi Note 10 Pro Max are different devices).
- 💾 Free up at least 10 GB of free space on the computer system disk for unpacking archives and driver operation.
- 🔌 Disable antivirus programs while you are firmware, as they can block low-level drivers from running. ADB and Fastboot.
It is important to understand the difference between firmware types. Global (Global) contains many languages and services Google, Chinese (China) often comes out earlier and has more features, but without Russian and with Chinese software. When changing the firmware region (for example, from China to Global), it is mandatory to unlock the bootloader, otherwise the process will be interrupted at the verification stage.
Installation of drivers and utilities Mi Flash Tool
In deep diagnostic mode, you need drivers to communicate with your smartphone. Without them, Windows will not be able to recognize the connected device as a firmware object. Standard drivers that are installed automatically when you connect your phone as a media device will not work here. We need Qualcomm or MediaTek specific drivers (depending on the processor) and ADB/Fastboot drivers.
The main tool for the work will be the Mi Flash Tool. This is the official utility from Xiaomi developers, which allows you to download system images to the memory of the phone, you should download it from the official website or trusted mirrors. Once you download the archive with the utility, it must be unpacked into the root of the disk, for example, in the folder C:\MiFlash, to avoid the path errors that often occur when working with long folder names.
The process of installing drivers often causes difficulties for beginners. If the automatic installation did not work, you will have to resort to the manual method through Device Manager. In the list of equipment, you need to find an unknown device, select Update Driver and indicate the path to the folder with unpacked drivers from the Mi Flash kit. Successful installation will be confirmed by the appearance of the Android Bootloader Interface device in the list when you connect your phone in Fastboot mode.
☑️ Verification of PC readiness
Unlocking the Bootloader bootloader
Bootloader is a program that runs to the operating system and checks the integrity of the software. By default, it is blocked on Xiaomi smartphones, which prohibits the installation of unofficial firmware or changing the region. To perform an operation through a PC in most cases (especially when changing the region), Unlocked status is required. You can check the current status by entering Fastboot mode: the screen will be labeled FASTBOOT and the status of the bootloader.
The unlocking procedure requires the Mi Account to be linked to the device and special permission from the company’s servers, and this is done for security reasons so that malicious users cannot steal data from the stolen phone. Once you apply for the Mi Unlock app on your PC, you will have to (wait) 7 to 30 days before the unlock button becomes active.
⚠️ Note: The bootloader unlock process automatically performs a full Wipe Data reset. All photos, contacts, and apps will be deleted without recovery unless you backed up in advance.
There's a nuance with the regions of the accounts, and sometimes the servers for different regions work at different permission rates, and if the standard method of applying through a smartphone app doesn't allow you to apply, you can try logging in to your phone settings and to your Mi Unlock app on your PC, making sure that the region is the same as the phone and the program, which is a common error that leads to the message "Account isn't bound."
Step-by-step instructions for firmware through Fastboot
When all (preparation) is complete, the drivers are installed, and the firmware is unpacked, you can go to the process itself. Run the Mi Flash Tool on behalf of the administrator. Press the Refresh button in the program interface — while it should be empty, since the phone is not yet connected in the right mode. Now turn off the smartphone completely.
To go to Fastboot mode, you need to press both the volume button and the power button at the same time. Hold them until the Mi Bunny logo appears on the screen, which is repairing the android. Connect the cable to your computer. The Android Bootloader Interface should appear in the Windows Device Manager, and the Mi Flash program will display the serial number of the phone.
The firmware files must be unpacked.
You cannot select the archive.tgz or.zip within the program.
You need to select a folder that contains images, bat and txt files.In the Mi Flash Tool, click the "Select" button and specify the path to the unpacked firmware folder. At the bottom of the window, select the firmware mode. For a full clean installation, choose clean all. This option completely erases all data and partitions, installing the system "from scratch." The clean all and lock option will also close the bootloader back, but only use it safely if you are flashing the same region that was originally used.
- 🚀 clean all: Complete data cleanup, bootloader remains unlocked (recommended).
- 🔒 clean all and lock: Data cleanup and bootloader lock (only for native firmware).
- 💾 Save user data: Attempt to save data (not recommended when changing Android versions).
What if Mi Flash can’t see your phone?
Table of firmware modes and their description
In the Mi Flash Tool, users are confronted with several firmware options, and understanding the difference is critical to avoid turning a smartphone into a brick or losing important data. Below is a comparative description of the main modes.
| Reim firmware | Data retention | Bootloader status | Risks. |
|---|---|---|---|
| clean all | No (full reset) | Unlocked. | Minimum |
| clean all and lock | No (full reset) | Blocked. | High (when changing region) |
| save user data | Yeah (attempt) | Unlocked. | Medium (possible bugs) |
| Recovery mode | Depends on choice. | It doesn't change. | Low. |
The safest and most recommended option for changing a software or region version is clean all mode, which ensures that there are no “tails” left from the old firmware that could cause conflicts and instability. Once the process is complete, the phone automatically restarts, and the first download can take up to 10-15 minutes.
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Tip: If you've had a long phone hanging on the Mi logo after you've had it, don't panic. The first boot after you reset the system is always long, because you've been optimizing your applications and creating your system files. Wait 15 minutes.
Possible errors and methods of their elimination
One of the most common bugs is Missmatching image and device. This means you're trying to install firmware that's not designed for that particular device. Double-checking the model code name (e.g., gauguin for Redmi Note 9 Pro 5G) is mandatory.
Another common problem is Error: Flash all has failed! or Can not flash without unlock. The first one often occurs when using clean all and lock mode on a device with a locked bootloader or when trying to close the bootloader on someone else's firmware. The second one says that the bootloader is indeed locked, and you need to first go through the unlock procedure through Mi Unlock.
⚠️ Warning: If a certain percentage of the time is stuck in the firmware process, don't be in a hurry to turn off the cable. Sometimes the processor waits for a response from the server or for a large partition to be written to complete.
Also worth mentioning is the Anti-rollback check failed, a security mechanism that prevents you from rolling back to an older version of Android if the new version has an increased security index, and you can’t get around this limitation by software methods – you will need an authorized service account or wait for a newer firmware to release.
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The main principle of successful firmware is the exact match of the firmware file to the device model and the use of the “clean all” mode to avoid software conflicts.