Many users who buy Chinese-branded devices face limitations of embedded software, lack of Google services, or the presence of advertising in system applications. Self-replacement of the operating system allows you to get a Global ROM, devoid of these shortcomings, and opens up access to the full functionality of the smartphone. This process, often called “flashing”, seems difficult only at first glance, but with strict adherence to the algorithm of actions is available even for beginners.
Before you start taking action, you need to realize that any manipulation of the system partition carries certain risks. Incorrectly selected firmware for a particular model (for example, trying to install software from the Redmi Note 10 on the Redmi Note 10 Pro) is guaranteed to turn the device into a “brick.” However, if you carefully study the theoretical part and prepare the necessary tools, the probability of success tends to one hundred percent. In this article, we will discuss all the stages, from preparation to the first inclusion of the updated system.
💡
Before starting any actions, back up all important contacts, photos and documents to the cloud or to your computer, as during the firmware process all data will be irretrievably deleted.
Preparation: tools and software
The success of the operation depends on the quality of the workplace and the availability of proper equipment. You will need a personal computer or laptop running the Windows operating system, as the main utilities for working with Bootloader and the sewers are optimized for this platform. The use of virtual machines or macOS operating systems is possible, but may require additional dances with diamond and install specific drivers.
A critically important element is USB-It should be original or high-quality analogue, capable of transmitting data, and not only to charge the device. Cheap cables from cheap power banks often don’t have the necessary contacts inside the connector, which leads to constant connection breaks at the most inopportune time. 10-15 GB free space to place system image files.
You'll need to download a few key components to work, first of all, the firmware itself, which should only be downloaded from official sources or proven resources like XiaomiFirmwareUpdater; secondly, the Mi Flash Tool, the company's official tool for Fastboot-mode, and of course, the ADB and Fastboot drivers, which allow the computer to "see" the smartphone in special boot modes.
✅ Charge your smartphone to at least 60%
✅ Find quality USB-cable (preferably original)
✅ Download the current firmware for a specific model
✅ Install drivers ADB/Fastboot computer
✅ Create a backup copy of important data
✅ Enable debugging on USB developer-setting-->
Unlocking the bootloader: the mandatory first step
Xiaomi’s factory defenses don’t allow you to change system partitions without special permission, a mechanism called Bootloader, and blocking it is a major obstacle to customization, and the unlocking process requires obtaining a special authorization token from the company’s servers, which is impossible without linking a Mi Account account to the device.
First, you need to activate the hidden menu for developers. To do this, go to the settings, select About Phone, and quickly click seven times in a row on the version number MIUI or HyperOS. After the message "You became a developer", go to the advanced settings and find "For developers." Here you need to activate toggles "Debug by USB" and "Allow unlock." Without these settings, the computer will not be able to interact with the phone at a deep level.
⚠️ Note: After applying for an unlock, you will have to wait 7 to 168 hours (usually 168 hours for new accounts). Xiaomi servers artificially delay the process for security reasons, and it is impossible to speed up this time by official methods.
After the waiting time, you need to start the Mi Unlock Tool utility on your computer, log in to your account and transfer the smartphone to Fastboot mode (pressing the power button and the volume down button on the switched-off device). If all data is entered correctly, the unlock button will become active. Remember that during the unlock process, all data on the phone will be completely erased, so a preliminary backup is mandatory.
Firmware: Fastboot vs. Recovery
There are two main ways to install a new operating system, each with its own features and applications: the first is through Recovery Mode, which is easier for beginners, does not require an unlocked bootloader (for a local update within a single region), and runs directly through the phone menu, but this method often does not allow you to change the region (for example, from China to Global) without additional tricks.
The second is through Fastboot, which is a deeper level of hardware interaction that allows you to completely rewrite all the memory sections, and that's the way you need to change the region, recover from errors, and install custom recavers. To work in this mode, an unlocked bootloader and a connection to the computer through USB-cable.
The choice of method depends on your ultimate goals. MIUI within a single region (e.g. Russia) EU Russia EU), download ZIP-Firmware archive, rename it to update.zip If you want to change software completely, clean up the Chinese version of advertising garbage, or restore a brick-and-mortar device, using Fastboot and Mi Flash is the only solution.
What is the difference between Recovery and Fastboot ROM?
The process of firmware through the Mi Flash Tool
Consider the most reliable and common way to replace software is to use the Mi Flash utility. After downloading and installing the program, as well as unpacking the archive with firmware (it is important that the path to the folder does not contain Cyrillic characters and spaces), you can go to action. Put your smartphone into Fastboot mode, holding the power button and the volume down button, and connect it to the PC.
Run Mi Flash on behalf of the administrator. In the address bar at the top, paste the path to the unpacked firmware folder or press the "Select" button and manually specify the folder. The program must automatically identify the connected device and display its serial number in the list. If the device is not identified, check Windows Device Manager under Android Device or «QHSUSB_BULK» There shall be no devices with yellow exclamation marks.
adb devices
fastboot devicesAt the bottom of the program window, you'll see three options: "Clean all" will clear the memory completely and install a clean system - this is the recommended choice; "Save user data" will try to save files, but can lead to errors when changing regions; "Clean all and lock" will do the same as the first one, but will re-lock the bootloader, which is useful when returning the device to its original state before selling.
💡
Always choose Clean All mode when changing your firmware region or switching from Chinese to global to avoid cyclical reboots and system errors.
After selecting the mode, press the Flash button. The process will take 100 to 500 seconds. At this time, it is strictly forbidden to turn off the cable or interrupt the program. The progress indicator will move, and the log will show signs of passing stages. Successful completion is indicated by the green “Flash Done” and automatic restart of the phone.
Comparison of methods and possible errors
The table below compares the main characteristics of the two firmware modes so you can navigate the situation faster.
| Parameter | Recovery Mode | Fastboot Mode |
|---|---|---|
| The need for a PC | Not required | I'll be sure. |
| Unlocking BL | Not always. | Required. |
| Change of region | Hard to do. | Full support |
| Risk of error | Low. | Medium (requires drivers) |
| Speed of the process | Slower. | Hurry up. |
One common problem is the Mi Flash Mi Flash “Missmatching image and device” error, which means you’re trying to flash firmware that isn’t designed for your device code name (like the firmware for lmi on a phone with cmi code). Always check the code name in Settings → About phone or on the box before downloading the file.
Another common problem is the “Anti-rollback check failed” error, which is a security mechanism that prevents you from rolling back to an older version of Android if you have an anti-rollback version. Trying to circumvent this limitation can cause the motherboard to fail completely, so only put current or newer versions of the software.
⚠️ Warning: If you run your phone into an endless Bootloop after you run it, don't panic. Try to do the Clean All procedure again. If that doesn't work, it's possible that the firmware file was corrupted when you download it, check the checksum of the archive.
First start and set up system
After a successful flashing, the first run of the system can take much longer than usual, from 5 to 15 minutes. This is normal, as applications are optimized and new system files are created. The MI or Xiaomi logo can appear on the screen, followed by the Android logo with a running boot bar.
Once you download, you will be greeted by a welcome screen. Since you have most likely installed a global or European version, languages will be available and Google services are already built in. When you set up a Google account, the system may request a sign-in confirmation from another device, which is standard security procedure. If you have changed region from China to Global, make sure that the date and time settings are automatically set to avoid security certificate issues.
It is recommended to go to the settings immediately after the first activation and check the version of the software. Sometimes after changing the region, additional micro-update of security components is required, and it is also worth checking the main modules: camera, Wi-Fi, Bluetooth and touch screen to make sure that the drivers work correctly.