Smartphones brand Xiaomi deservedly popular due to the excellent ratio of price and characteristics, but the software shell MIUI often causes complaints from advanced users. the abundance of preinstalled software, aggressive work of energy saving and intrusive advertising in system applications make many people look for alternatives. the transition to “clean” Android (Stock Android) can radically change the experience of interaction with the device, making the interface easier and the system more stable.
The process of replacing the firmware requires carefulness and strict adherence to the instructions, as any errors can lead to the failure of the gadget. In this article, we will discuss in detail how to prepare for the procedure, what tools will be required and what risks exist. You will learn how to unlock the bootloader and install custom receptacles to enjoy the speed of the stock system.
Risk analysis and device preparation
Before you start modifying the software, you have to realize that you take full responsibility for the result. Unlocking the Bootloader is the first and mandatory step that automatically voids the manufacturer's warranty on the software part of the device.
It is important to understand that not all Xiaomi models have the same degree of support from the development community. For popular flagships and mid-budget models (Mi series, Redmi Note), it is not difficult to find a stable build of Custom ROM, whereas for rare or very new devices, firmware may not be available at all. Before starting work, make sure that there is a proven version of software for your particular model.
⚠️ Attention: In the process of flashing, there is a risk of turning the smartphone into a “brick”. If the device stops responding to commands, it can only be restored through mode. EDL, This often requires a paid account of an authorized service center.
Make sure to back up all your important data as your internal memory will be fully formatted.Photos, contacts, instant messengers and files must be stored on an external medium or in cloud storage.Plus charge your device battery to at least 80% to avoid sudden power outages during critical memory sectors recording stages.
To successfully perform the operation, you will need a computer running Windows, Linux or macOS, as well as high-quality USB-Cheap cables often don't provide a stable connection, which can lead to a data break and a fatal firmware error.Use the original cable or a certified good-shielded counterpart.
Required tools and drivers
To interact with a smartphone at a low level, you will need specialized tools that you need to install on the computer in advance. ADB And Fastboot, which allows you to send commands to the device, and without these gates, you can interact with the bootloader and you can use it_recovery_ will be impossible.
The second critical element is the right drivers. Xiaomi devices most often require Qualcomm or MediaTek drivers, as well as standard Android ADB Interface drivers. In Windows, installing them may require manual intervention through Device Manager if the automatic installation fails.
You will also need a software program to manage firmware files. Google's Platform Tools utility, which contains the necessary binary files, is often used. Some models may require specific software, such as the Mi Flash Tool, to initially unlock or firmware a stock image before installing the custom.
⚠️ Note: Download tools and drivers only from official developer sites or trusted forums (e.g., download from official developers’ websites or trusted forums, XDA Files from questionable sources may contain malicious code that will steal your passwords or damage your system.
Don’t forget to enable USB debugging mode on the smartphone itself. Go to Settings → About Phone and quickly tap the MIUI build number seven times to activate the developer menu. Then activate the USB debugging switch on the Developer menu that appears.
Unlocking the bootloader (Bootloader)
Xiaomi’s factory protection does not allow you to change the system partition without official permission. The bootloader unlocking procedure is a mandatory filter that every user who wants to modify the device undergoes, a process that is tied to your Mi Account and requires waiting.
First, you need to link the device to an account in the developer settings menu, then you can request to unlock through the Mi Unlock app on your PC. The system can require a wait of 7 to 30 days (depending on the region and company policy) before you issue permission, which is the time for the user to change his mind or steal the device.
Once the permission is obtained, the process is as follows: the smartphone is transferred to Fastboot mode (clamping the volume button when the USB is connected), and a command is sent through the Mi Unlock utility to unlock the lock. The device is completely cleared, and the bootloader will be open to record new images.
☑️ Checking readiness for unlocking
It is important to note that unlocking the bootloader reduces the security of the device. Some banking applications and services (such as Google Pay or its analogues) may refuse to work on an unlocked device due to the integrity of the SafetyNet or Play Integrity system.
Finding and Choosing the Right Firmware
Choosing an operating system is a creative process that depends on your needs. The development community offers a variety of options, from a fully stock Android One to lightweight versions of LineageOS or Pixel Experience. Each build has its own features, feature set and level of stability.
When choosing firmware, pay attention to build status. Stable versions are designed for daily use and contain minimal errors. Experimental builds (Nightly or Beta) get new features faster, but can run unstable, have problems with autonomy or the camera.
Also consider the Android version: Installing a too new version of the OS on old hardware can lead to brakes, and too old to incompatibility with modern applications, the optimal choice is the version next to the one that the device came out with initially, or one of the last supported.
Where do I look for firmware?
You also need to download the appropriate backup to install the firmware, and the most popular and functional is the TWRP (Team Win Recovery Project), which allows you to install firmware, backup, clean partitions, and get root rights. Make sure that the TWRP version is designed specifically for your CPU and device model.
Installation of Custom Recovery and firmware
When all the files are uploaded, the technical part of the process begins. The first step is to install the image of the recovery. Connect the phone in Fastboot mode to the computer and open the console (terminal) in the tool folder. ADB. The installation is like fastboot flash recovery. twrp.img, where twrp.img — filename of your recaveri.
Once you have successfully recorded, you need to immediately put your device into recovery mode so that the installed image is not overwritten by the system. This is usually done by a combination of buttons or by commanding fastboot boot twrp.img for the first run. The TWRP menu recommends that you make a full backup of the current system (Boot, System, Data sections), even if you plan to delete everything.
Next comes the Wipe phase, which requires a clean installation, which requires formatting the Data, Cache, and Dalvik/ART Cache partitions, which ensures that the old MIUI configuration files do not conflict with the new system, and does not format the Internal Storage partition if you store the firmware files there unless you have transferred them to an external map or PC.
The final step is to install the firmware itself. Copy the archive with the operating system (usually.zip) to your phone, select Install from the TWRP menu, specify the file and confirm the action. The process will take a few minutes, after which a message about the successful installation will appear on the screen.
| Phase | Action. | Risk of error | Implementation time |
|---|---|---|---|
| 1 | Unlocking Bootloader | High (data reset) | 7-168 hours (waiting) |
| 2 | Installation of TWRP | Medium (version error) | 2-5 minutes |
| 3 | Clean Partitions (Wipe) | Low. | 1-2 minutes |
| 4 | ROM installation | Medium (bit file) | 5-10 minutes |
Configuring a new system and GApps
After the first reboot, you will be greeted by a pure Android welcome screen. However, most custom firmware does not have Google services (GApps) as they are distributed under a proprietary license. If you want to use Play Market, YouTube and other services, you need to install the GApps package separately.
Download the right GApps package (NikGapps or OpenGApps is recommended, the architecture of arm64, the Android version corresponds to your firmware) Installation is done similarly to firmware: through the Install menu in TWRP. It is important to install GApps immediately after the OS firmware, before the first boot system, otherwise errors may occur.
Once you install services and set up the first setup, the system can run slower than usual. That's OK: background processes index files, optimize applications, and configure databases. Let the device charge for about an hour without active user action to complete the background optimization.
💡
Use a magnetic sensor to calibrate compass after flashing if navigation is not working correctly. In pure Android, this is often required to be done manually through the Google Maps app.
Now you can customize the look, install the launcher and the apps you need. Pure Android gives you more freedom to customize the interface, animations and behavior of the system than MIUI, allowing you to create a truly personalized environment.
Frequent problems and their solution
Even with careful follow-up, unexpected situations can occur, and one of the most common problems is a “bootloop” (cyclical reboot) when the phone gets stuck on the logo, most often solved by re-clearing the Data and Cache partitions, as well as checking the compatibility of the GApps version and firmware.
Another common problem is a broken camera or Bluetooth, which indicates that the drivers are not compatible with the firmware version of the kernel, so you should try a different build or find and flash a separate Vendor package if the developer indicates that you need it.
If the phone is no longer computer-defined or has gone into EDL (burning red indicator or black screen) mode, you will need to use special recovery gates such as Qualcomm QPST or Mi Flash in Emergency Download mode.
⚠️ Warning: Never try to interrupt the firmware writing process, even if it seems to be stalled. Interrupting during the partition writing phase is almost guaranteed to damage the boot sectors and requires a hardware programmer to restore the workflow.
To diagnose errors, carefully examine the logcats that can be removed via ADB. Logs often contain a direct indication of the cause of the failure, such as a partition mounting error or the absence of a specific configuration file. Log analysis is a key skill for any model.
💡
The success of the flashing depends on 90% of the quality of the downloaded files and the exact matching of the components versions (Recovery, ROM, GApps) of your device model.