How to completely demolish Xiaomi phone: from reset to flashing

Complete cleaning of Xiaomi devices is often the only way out when selling a gadget, transferring it to another user or critical errors in the system. Many users mistakenly believe that a simple file deletion or standard reset is enough to completely delete confidential information. However, modern data recovery methods allow you to return the remote even after formatting, if you do not take additional security measures.

The process of completely demolishing a Xiaomi phone involves not just returning to factory settings, but deep cleaning of all parts of internal memory, including cache, system logs and user data. In some cases, especially when changing ownership or selling a device, a radical approach with firmware is required, which ensures that no bytes of your personal correspondence, photos or passwords are obtained by unauthorized people.

In this guide, we will look at all available cleaning methods, from standard software tools to advanced methods through Fastboot. You will learn how to properly prepare the device, what tools will be needed for deep cleaning and how to avoid the typical errors that turn a smartphone into a “brick.”

Preparing the device for complete data deletion

Before you start radical action, you need to do a lot of preparation, and ignoring this step can lead to the loss of important contacts or locking the device account of the previous owner, first of all, create a full backup of all important data on an external medium or in the cloud.

A critical step is to untie accounts: If your device has Mi Account or Google Account activated, be sure to log out before resetting, otherwise FRP (Factory Reset Protection) protection will work, and the new owner will not be able to activate the phone without your password.

⚠️ Note: If you do not log out of your Google account before resetting, the device will require you to enter a password from that account when you first download it.

It is also recommended to remove the memory card. SD and SIM-Although a reset usually offers an option to clean internal memory, physical removal of media ensures that you do not accidentally delete important files from the memory card or lose access to a mobile bank tied to the SIM card.

Charge the battery of the device to a minimum of 60-70%. the process of complete flashing or deep reset can take a long time, and a sudden power outage at a critical time of writing system files can damage the bootloader.

Standard reset via MIUI settings

The most affordable way to completely demolish a Xiaomi phone without using a computer is through a built-in recovery feature, which is suitable for most scenarios where the system is stable and you just need to clean the device before selling.

To start, go to the settings menu. The path usually looks like: Settings → About Phone → Reset. In some versions of MIUI, this item may be in the “Advanced” section. Select the “Erase all data” option.

If you have account protection enabled, you will need to enter the screen unlock password or Mi Account password, and once confirmed, the cleanup process will begin, which can take from 5 to 15 minutes depending on the amount of information accumulated.

However, standard resets do not always overwrite memory sectors with new data, which theoretically allows for the recovery of information with special utilities. To improve security before reset, you can fill the device's memory with unnecessary large files (for example, high-resolution video), and then delete them, which will make it difficult to restore the original data.

Cleaning through Recovery Mode (Recovery)

If the operating system is not booting or you want to perform a deeper cleanup, use Recovery Mode.This is a system partition that runs independently of the main Android OS.

To enter this mode, turn off the phone completely. Then press the volume button and the power button at the same time. Hold them until the Mi logo or recovery menu appears. The menu uses volume buttons to navigate and the power button to select.

In the Recovery menu, select a language (if available) and find Wipe Data. You will be prompted to select Wipe All Data. Confirm the action by selecting Confirm. The system will format the /data partition where all user information is stored.

This method is more effective than standard reset, because it works at a lower level of access to the file system, but it still does not guarantee that data recovery by forensic methods is impossible, although this is usually enough for household use.

Full Fastboot Firmware (for Advanced)

The most radical way to completely demolish a Xiaomi phone and be sure of the cleanliness of the device is to flash and clean all partitions through Fastboot mode, USB-cable and official utility Mi Flash Tool.

First, you need to unlock the bootloader. Without this step, deep flashing is impossible. The unlocking process takes 7 to 30 days and requires you to link your account to the developer settings. Once unlocked, download the Fastboot ROM image for your specific model from the official website.

Download the phone to Fastboot mode by clamping the volume down button when connected USB-Run the Mi Flash Tool on your computer, select the path to the unpacked firmware, and at the bottom of the window, select Clean All or Clean All and Lock mode.

Clean All mode completely erases all memory partitions and installs a fresh copy of the system. Clean All and Lock mode does the same, but also locks the bootloader, returning the device to a "store-like" state.

⚠️ Warning: Choosing Clean All and Lock mode on a device with unofficial (Chinese) firmware or modified bootloader may result in a device lock (Bootloop.

Using ADB (Android Debug Bridge) allows you to perform manual cleaning commands if the GUI is not working. the adb reboot bootloader command puts the device into bootloader mode, and further fastboot erase commands allow you to wipe specific partitions such as userdata and cache.

💡

Clean All and Lock mode in the Mi Flash Tool is the only way to restore the bootloader’s factory lock, which is critical for security when selling.

Delete Mi Account and FRP protection nuances

One of the main problems with a complete cleanup is protection against theft. Xiaomi's Find Device service rigidly ties the device to the owner's account. Even after a complete flash or reset via Recovery, the phone will request a username and password from the last Mi Account tied when it is first activated.

If you forget your password, you can only restore access through the recovery procedure on the official Mi Account website. Attempts to circumvent this protection by illegal methods (Bypass) often lead to unstable phone operation or a complete blocking of IMEI.

When selling a device, be sure to inform the buyer that the phone is untied from all accounts. If you have performed the procedure correctly described in the preparation section, there will be no problems with activation for the new owner.

If the phone was bought from hand and it has someone else's account, it will not be legal to use it, the only way out is the previous owner to remotely untie the device through the i.mi.com web interest.

Data security and inability to restore

Modern Xiaomi smartphones use default encryption, which means that when you execute the command “Reset settings” or format the userdata partition, not only the file table is deleted, but also the encryption keys.

Without encryption keys, the recovered data snippets are an unreadable set of bytes. Therefore, on modern devices with Android 6.0 and higher (and MIUI is based on newer versions of Android), standard reset is considered safe enough to protect against household data digging.

However, if you're keeping government or trade secrets, you don't have to rely on software resets alone, and in such cases, physical destruction of the drive is the only one hundred percent method, but it's redundant for the average user.

💡

For maximum certainty of deleting data before selling, after the first reset, set the phone as new without entering personal data, fill the memory with junk and reset again. This will re-write the old sectors.

Frequently Asked Questions (FAQ)