Users often wonder how to uninstall a system on Xiaomi when faced with critical errors, a “brickle” device or the desire to completely clean the gadget before selling. The procedure for removing the operating shell MIUI or HyperOS requires accuracy, since careless actions can lead to a complete loss of functionality of the smartphone. In this material, we will discuss in detail the technical aspects of the process, methods of interfering with system partitions and ways to restore functionality.
You should immediately warn: the complete removal of system files makes the phone inoperable until the installation of a new firmware. Bootloader (bootloader) will no longer find its way to the kernel, and the device will hang on the logo or go into emergency recovery mode. Understanding the architecture of the Android file system is necessary for safe execution of operations.
Before we start taking drastic measures, we need to assess the feasibility of such actions, and often a standard reset is enough, but in cases of deep virus infection or damage to system libraries, deeper intervention is required, and we will consider all the options available, from software methods to the use of specialized software for PCs.
Device preparation and data backup
Any intervention in the system partition requires preparation. The first step is to create a full copy of important information, as the process of removing the system will inevitably destroy all user data, including contacts, photos and message history. Use the cloud services Xiaomi Cloud or Google Drive to synchronize mission-critical files.
The second important step is to ensure that the device is powered at a minimum. 60-70%, So that a sudden shutdown during partition formatting does not cause physical damage to the memory controller. USB-cable that will be used to connect to a computer.
To perform advanced operations, you will need to activate the developer mode, which is a hidden menu that allows you to access debugging over USB and other system functions.
- 🔧 Go to Settings. → About the phone and 7 times click on the version MIUI.
- 🔧 Open the menu Additionally → For developers.
- 🔧 Activate the Debugging Point USB.
- 🔧 Enable the Unlock option OEM (if available).
⚠️ Attention: Activation of debugging by USB Opens file system access to the connected computer. Do not connect the device to public charging stations with this option enabled.
After completing all the steps, the preparation is considered complete, and now you can move on to choosing a method for removing system components depending on your goals and the state of the device.
☑️ Readiness to remove system
Using Fastboot Mode for Complete Cleanup
Fastboot is a low-level protocol that allows you to interact with the bootloader directly, bypassing the operating system. It is through this interface that partitions are most often completely cleaned, which effectively means removing the system. To enter this mode, you usually need to turn off the phone and pinch the combination of power buttons and volume reduction.
Once connected to a PC, you can use the fastboot utility to execute formatting commands. The fastboot erase userdata command deletes the partition with user data, and the fastboot erase cache clears the cache. However, the system partition formatting is often required to completely remove the system, which can be blocked on devices with a locked bootloader.
Risks of working in Fastboot
If the bootloader is unlocked, the list of manipulated partitions expands significantly. You can erase the system partition, which will lead to a state where the phone only turns on in Recovery or Fastboot mode. This is often used before installing custom firmware that is not compatible with the current markup.
It is important to distinguish between erase and format. The first simply labels sectors as free, the second creates a new file system, and the preferred formatting is to completely remove the old system before a clean installation.
Removing System Applications Through ADB
If by “deleting the system” you mean getting rid of embedded software (bloatware), then using Android Debug Bridge (ADB) will be the most secure method, this approach does not require unlocking the bootloader and allows you to remove even those applications that are hidden from the user in the standard interface.
You need to install platform tools on your computer and connect your smartphone. Once you have authorized the connection on your phone screen (you will receive a debugging request), you can execute packet removal commands.
adb shell pm uninstall -k --user 0 name packetThis command removes the application for the current user, but leaves its files in the system partition, which makes it easy to restore work in the event of an error.The full list of packages can be obtained by the adb shell pm list packages command. Be careful: removing critical system components, such as com.android.phone or com.miui.home, can lead to a cyclical reboot.
There is a list of packages that are highly discouraged without a deep knowledge of MIUI architecture, including service shells, hardware drivers and security components.
- 🚫 com.miui.securitycenter – Security Center.
- 🚫 com.xiaomi.finddevice – Device Search Service.
- 🚫 com.android.providers.downloads – Downloads Manager.
Using ADB allows you to flexibly manage the system, turning the heavy shell into a lightweight Android, close to the stock, but remember that after resetting the settings to the factory remote applications will return.
Cleaning through the Recovery (Wipe Data) menu
The standard Recovery Mode menu provides basic tools for deleting user data and cache, a standard method that is recommended to be used first when there are problems with the interface or before flashing in an official way.
To get into this menu, you need to press the power and volume button on the device that is turned off. Navigation is done with volume buttons, and the choice is confirmed by the power button. Depending on the version of Recovery (Stock or Custom), the set of functions may vary.
In the Xiaomi Recovery stock, the following cleaning options are available:
| Option. | Description of action | Impact on the system |
|---|---|---|
| Wipe Data | Complete deletion of all data | Reset to factory settings |
| Wipe Cache | Clearing temporary files | Secure, data is stored |
| Wipe All Data | Formatting all sections | Complete removal of system and data |
⚠️ Warning: The "Wipe All Data" option in some versions of Recovery requires confirmation through code entry or password from the Mi Account.
If the standard menu doesn’t allow you to delete corrupted system files, you’ll need to switch to more sophisticated methods, such as using Custom Recovery (TWRP). However, installing a third-party recovery itself requires an unlocked loader and may disrupt some functions, such as, NFC-payments or Widevine L1.
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Before logging into Recovery, make sure you remember the screen unlock password and the data from the Mi Account, otherwise activation of the device after reset will not be possible.
Risks and consequences of deleting system files
Deleting the operating system completely is a destructive action that leaves the device in a state unsuitable for normal use. The smartphone becomes a set of electronic components without control software. The main consequence is that the interface cannot be loaded.
In addition, unique device identifiers may be lost if the Persist partitions have been formatted or if the Persist partitions have been formatted. EFS. These sections store calibration data for cameras, approximation sensors, and IMEI and MAC-address Wi-Fi/Bluetooth It is not possible to recover this data from public sources, as it is unique to each instance.
Possible scenarios after a failed removal:
- 🔥 The device goes into an endless reboot cycle (Bootloop).
- 🔥 The screen is black and only vibrations are reacting.
- 🔥 The phone is defined by the computer only as a Qualcomm device. HS-USB QDLoader 9008.
In most cases, the only way out is to flash through the Fastboot using the original image, and if secure partitions are affected, you may need a programmer or a service center to solder the memory chip.
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Removing system partitions without having a ready-made firmware at hand is equivalent to turning a smartphone into a “brick”.
System Restore after Remove
If the system is already deleted or damaged, you need to perform a recovery procedure, the most effective method is using the Mi Flash Tool utility and the official Fastboot firmware, which allows you to completely rewrite the contents of memory, ignoring the current state of the partitions.
The recovery process is as follows: download the firmware archive for a particular model, unpack, and then the Mi Flash Tool selects the “Clean all” or “Clean all and lock” mode.
Press Flash and wait until the process is complete. The progress bar will show the status of partition recording. At this time, you should absolutely not turn off the cable or interrupt the power. Once you record successfully, the phone will automatically restart to the new system.
In cases where standard methods do not help (for example, the device is not included in the Fastboot), you may need to use EDL (Emergency Download Mode) mode.