How to demolish the system on Xiaomi Redmi: from reset to flashing

Situations where device owners are wondering how to demolish a system on Xiaomi Redmi arise for various reasons, from the banal desire to sell a gadget in its pure form to combat undeleteable viruses or system errors. Among MIUI and HyperOS enthusiasts, this process is often called “full cleaning” or “hard reset”, but technically this can involve different levels of software intervention.

Modern Redmi smartphones have a sophisticated security architecture that protects user data from unauthorized access. Deleting the system completely without installing a new one will result in the device becoming a brick and loading endlessly into recovery mode. So, by “demolition,” we’ll understand a controlled process of reinstallation or deep reset that returns the device to a state “out of the box” or even cleaner.

Before any manipulations are initiated, the risks must be taken into account. Any interference with the bootloader or system partition carries the potential for loss of warranty or motherboard failure if the technology is broken. Resetting encryption keys without a linked Mi Account can permanently lock the device. In this article, we will look at all the legal and safe methods of complete memory cleansing available to users of different skill levels.

Preparing the device for radical action

The first and most critical step is to save data. The demolition process irreversibly destroys all information in the internal storage, including photos, contacts and correspondence in messengers. Create a backup through the Mi Cloud service or use local storage on the computer. Make sure that the battery is at least 60%, as a sudden power outage during the re-marking of the flash memory partitions can lead to irreversible damage to the bootloader.

The second step is to disable all security mechanisms that may prevent the installation of a new firmware, including Locked Bootloader locking, which often requires waiting for 7-168 hours for global versions of the application, and you also need to log out of all accounts, including Google and Mi Account, so that FRP (Factory Reset Protection) protection does not work after the reset procedure.

⚠️ Note: If you do not know the password from the Mi Account or Google account that was synced with the phone, categorically do not start the procedure of a complete reset. the device will be locked at the activation stage, and you can unlock it only by presenting a purchase check at the service center.

To perform some advanced methods, you will need a PC with ADB and Fastboot drivers installed. Download the current firmware version for your model from the official resource miui.com. Pay attention to the version region (Global, Russia, China, EEA) - the firmware must correspond to the region of the device or be cross-regional if the bootloader is unlocked.

Standard Reset Method through Recovery Menu

The most affordable way to demote user data and system settings is built into every Xiaomi smartphone. This method does not require a connection to a computer and uses a regular recovery menu. To get into it, you need to completely turn off the smartphone, and then pinch the Volume Up + Power key combination and hold them until the Mi or Redmi logo appears.

In the Recovery menu, you can control the volume buttons (up/down) and the power button (select). You need to select a language (usually English or Chinese), and then go to Wipe Data. Here you will find two options: Wipe All Data (complete cleaning) and Reset Settings (reset settings only).

The system will request confirmation of action, because it's a critical operation. Once confirmed, the /data partition formatting process will begin. It takes 30 seconds to a few minutes depending on the storage capacity. Once completed, the phone will automatically restart. If you plan to just give the phone away or sell it, this method is usually enough.

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If the Recovery menu does not open or the phone immediately after the logo goes into a restart (bootloop), try connecting the device to the computer through the phone. USB-cable.

However, if the goal is deeper, such as removing system debris or viruses embedded in the /system partition, standard data waiping will not help, in which case the parts of the system remain intact, and the malware can be activated again after the first download.

Using Fastboot for a complete flashing

Fastboot is a low-level protocol that allows you to interact directly with your device, bypassing the operating system. It's through this interface that you can tear down the entire system and write the new one clean. To enter this mode on your smartphone, press Volume Down + Power. The screen will show an image of a hare repairing an android, or the inscription FASTBOOT.

To work in this mode, you need the Mi Flash Tool on your computer, and the process is this: the phone is cabled to the PC, the program chooses the path to the unpacked firmware (.tgz format, not.zip), the key is to choose the firmware mode in the lower right corner of the program window.

There are three main modes, and the result depends on the choice:

• 🔹 Clean All – completely erases all data and re-sweeps, but retains the status of the bootloader (recommended for sale).
• 🔹 Clean All and Lock – Demolishes the system, data and re-blocks the bootloader (use only if the firmware region coincides with the region of the device).
• 🔹 Save user data – attempts to save data, but when changing versions of Android can cause errors (not recommended for crashes).

⚠️ Warning: Choosing the Clean All and Lock option when running a global firmware version on a Chinese device (or vice versa) will result in a hard lock (Hard Brick.

After selecting Clean All mode, press Flash. the process will take 200 to 600 seconds. At this time, it is strictly forbidden to turn off the cable or interrupt power. The utility itself will overwrite all partitions, including boot, system, vendor and modem, effectively creating a new file system from scratch.

Demolition of the system through ADB and command line

For advanced users who need full control of partitions, there is a method of using Android Debug Bridge (ADB), which allows you to manually format partitions, which effectively means “demolition” of the system in parts, the method works only if the phone is turned on and debugged over USB, or is in Recovery mode with ADB support.

First, activate Developer Mode in your phone settings (7 times click on the build number in About Phone) and enable USB Debugging. Then connect your smartphone to your PC and open the command prompt in the folder with the ADB installed. Check the connection with the command:

adb devices

If a device with device status appears on the list, you can move to formatting. The adb reboot bootloader command will put the phone into Fastboot mode, from where you can manage partitions.

adb shell

While in the shell, you can use the sm utility (storage manager) or direct formatting commands if you have root rights, but it's safer to use Fastboot commands to erase specific partitions. For example, the fastboot erase userdata team cleans user data, and fastboot erase cache, the full data demolition command:

fastboot -w

This command (-w) is analogous to choosing Wipe All Data in a GUI. It forcibly formats data and cache sections. It's a powerful tool that's often used when the Recovery graphics menu is damaged or unavailable.

Emergency Download (EDL) for dead devices

If the system is not properly demolished and the phone is not showing signs of life (black screen, no reaction to buttons), the final frontier is the EDL (Emergency Download) mode, which is the deep firmware mode available on Qualcomm processors used in most Redmi models, which often requires disassembling the case and closing special contacts on the board (Test Point).

In EDL mode, the phone is defined in Windows Device Manager as Qualcomm HS-USB QDLoader 9008. The regular Mi Flash Tool may not be suitable for this mode, often requiring an authorized Xiaomi account (Mi Account with Engineer Rights).

The process looks like this:

1. The smartphone is being sorted out, the fee is being found.
2. Two contacts (Test Point) are closed with tweezers.
3. Not breaking the contacts, connecting USB-plug-in.
4. The firmware program selects the COM port and the path to the firmware.
5. The recording process is started, which even the bootloader restores.

This is the only way to revive the phone after a failed attempt to demolish the system or install broken firmware. However, since the 2020-2021 models, Xiaomi has closed the possibility of free firmware through EDL for ordinary users, requiring an authorized service center account.

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EDL mode is a “last chance” for the device, but on modern Redmi models it requires authorization through Xiaomi servers, making it difficult for the average user to access.

Common Errors and How to Resolve Them

In the process of trying to demolish a system, users often encounter an Error 7 error or a message saying "Can't verify update." This happens when you try to install firmware through Recovery, but the Android version in the new firmware is lower than in the current one (downgrade ban), or when the integrity of the file is damaged.

Another common problem is the endless reboot (Bootloop) after reset, and if the phone gets stuck on the Redmi logo for more than 10-15 minutes, then the system files are damaged or incompatible with the hardware, in which case you need to log back into Recovery, do Wipe All Data again, and if this does not help, reflash through the Fastboot.

Also worth mentioning is the issue of activation after a reset: If a phone says "This device is locked," or requires a password from an account you don't remember, it's FRP protection. It's almost impossible to circumvent it in legal ways without accessing an account. Resetting the system doesn't remove the binding to the account on the manufacturer's server.

⚠️ Warning: Don't try to interrupt the firmware process if the progress bar is frozen at some percentage. 10-15 Interrupting the write to the system or boot partition is guaranteed to cause the device to fail.

Sometimes users confuse resetting the network settings or resetting the keyboard with demolishing the system. Remember that (real) demolition affects all memory parts. If you just want to speed up the phone, sometimes it's enough to clear the cache of applications or delete heavy files without resorting to radical measures.

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Before selling the phone, you must remove it. SIM-MicroSD card and memory card. After the Wipe All Data procedure, the memory card can remain with the data if you do not select the option of formatting internal storage (if it was combined).

Frequently Asked Questions (FAQ)