How to reset Xiaomi Redmi 9 to factory settings: detailed guide with photos

Resetting Xiaomi Redmi 9 to factory settings is a radical but effective way to solve most software problems: from constant freezes to viruses and errors after an unsuccessful update. However, an incorrect one hard reset can lead to the loss of important data or even bricking of the device. In this article you will find three proven methods reset - from the simplest to the most technically complex - and also learn how to prepare your phone and what to do if something goes wrong.

Feature Redmi 9 (codename lancelot) is that it runs on a processor MediaTek Helio G80, which means: some standard commands for resetting via Fastboot will not work here. We took this specificity into account and adapted the instructions for this particular model. If you have never performed a reset before, start with the first method (through settings). Experienced users will find alternative methods useful in cases where the phone does not turn on or is locked.

1. Preparing for the reset: what needs to be done in advance

Before you begin the reset, make sure you won't lose any critical data. Even if the phone is unstable, try these steps:

• 📱 Make a backup contacts, photos and documents. Use Settings → Google → Backup or special applications like Mi Mover (preinstalled on Xiaomi).
• 🔒 Make sure you know the password from account Mi Account. After resetting, the phone may require you to enter this data to unlock (function Mi Cloud Lock).
• 🔋 Charge the battery at least 50%. Interrupting the reset process due to discharge may lead to software failures.
• 📡 Disable all accounts (Google, Xiaomi, social networks) in Settings → Accountsif you plan to sell or transfer the phone.

If the phone does not respond to touches or does not turn on, skip this section and go straight to method 2 or 3. But remember: without a backup, it is almost impossible to restore data after a hard reset —they are erased irrevocably, including photos in the internal memory.

⚠️ Attention: On models Redmi 9 with firmware MIUI 12.5 and later, after resetting, you may need to confirm ownership via the linked phone number or email. If you do not remember this data, it will be extremely difficult to unlock the device.

2. Method 1: Reset through the settings menu (the safest)

This method is suitable if the phone turns on and responds to touches. It is the simplest and least risky. The instructions are relevant for MIUI 11/12/13/14:

1. Open Settings (gear icon on the main screen).
2. Scroll down and select About phone.
3. Click Backup and reset (in some versions Advanced → Reset settings).
4. Select Reset settings (not to be confused with Reset network settings!).
5. The system will prompt you to choose which data to clear. We recommend checking all the boxes, including Internal memory.
6. Enter the lock password (if set) and confirm the action.

The phone will reboot and begin the reset process, which will take 5-15 minutes. Once completed, you will see the initial setup screen, just like after purchase.

⚠️ Attention: If after resetting the phone requires entering data from the previous account Mi Accountand you don’t remember them, do not try guess the password multiple times - the device may be blocked for 72 hours. Contact support Xiaomi with proof of purchase.

3. Method 2: Reset via Recovery Mode (if the phone does not turn on)

If Redmi 9 stuck on the logo, does not respond to buttons or is blocked by a pattern, use recovery mode (Recovery Mode). This method works even with damaged firmware, but requires precise steps.

Instructions for Redmi 9 (and other smartphones on MediaTek):

1. Turn off the phone (press and hold the power button for 10-15 seconds if it is frozen).
2. Press simultaneously Power button + Volume up and hold for 10-15 seconds until the logo appears Mi.
3. Release the buttons. After a few seconds you will see the menu Recovery (black screen with yellow text in English or Chinese).
4. Use the volume buttons to navigate and the power button to select. Select Wipe Data (or Clear Data).
5. Confirm the action by selecting Wipe All Data (may be called Format Data).
6. After When completed, select Reboot to reboot.

If the menu is in Chinese, focus on the location of the items: Wipe Data usually the second or third from the top. In Redmi 9 interface Recovery simplified, without touch control - only. buttons.

What to do if Recovery Mode does not open?

If after holding the buttons the phone vibrates, but the menu does not appear, try:

1. Connect the charger and try again.

2 Hold the buttons longer (up to 20. seconds).

3. Use the combination Power + Volume down (rarely, but it works on some firmware).

If nothing helps, go to method 3 (Fastboot).

Problem	Possible cause	Solution
Recovery menu does not open	Damaged recovery partition	Use Fastboot (method 3)
After resetting, the phone asks for a password	Linking to is activated Mi Account	Enter account data or contact support
Reset is interrupted at 50%	Insufficient charge or memory damaged	Charge the phone and repeat or use PC
Phone does not turn on after reset	The firmware is damaged	Reflash via Fastboot or Mi Flash Tool

4. Method 3: Reset via Fastboot (for advanced users)

This method requires a computer and installed drivers MediaTek. It is suitable if:

• 🔧 The phone does not respond to other methods;
• 🔒 You need to bypass the lock Mi Account (illegal and risky!);
• 📱 You need to reflash the device after an unsuccessful update.

For Redmi 9 with a processor MediaTek Helio G80 the standard command fastboot erase userdata may not work. Instead, use SP Flash Tool or the following steps:

1. Install on PC Platform Tools (or Mi Flash Tool for Xiaomi).
2. Turn off the phone and hold down Volume down + Powerto enter in Fastboot Mode (a hare in a hat with earflaps will appear on the screen).
3. Connect the phone to the PC via USB.
4. Open the command line in the folder with platform-tools and enter:

fastboot devices

(If the device is not detected, install the drivers MediaTek Preloader.)

fastboot erase userdata
fastboot erase cache
fastboot reboot

If the commands do not work, try an alternative method via SP Flash Tool downloading the official firmware for Redmi 9 (file lancelot_global_images...).

⚠️ Attention: Using unofficial firmware or modified reset tools Mi Account can lead to permanent IMEI blocking. Xiaomi actively combats such methods, and the risk of “bricking” the phone is extremely high.

5. What to do after the reset: initial setup

After a successful reset Redmi 9 will turn on in initial setup mode. Follow the instructions on the screen, but pay attention to the key points:

• 🌐 Connecting to Wi-Fi: Set up the Internet right away - this will be needed to restore the backup and update the firmware.
• 🔑 Login to accounts: If the phone asks for data Mi Account, enter it. If you forgot your password, restore it through the website. data-i="193">Go to account.xiaomi.com.
• 📱 Data recovery: Select a backup from Google Drive or Mi Cloud, if you created it in advance.
• 🔄 Firmware update: Go to Settings → About phone → System update and install the latest version MIUI.

If after resetting the phone is slower than before, perform additional actions:

• Disable animation in Settings → Accessibility → Remove animation.
• Clear application cache in Settings → Storage → Data applications.
• Install a light shell (for example, Lawnchair Launcher) instead of the standard one MIUI.

6. Common mistakes and how to avoid them

Even if you follow the instructions exactly, problems may arise. Here are the most common errors and their solutions:

• 🚫 "Command not allowed" in Fastboot: Means that the bootloader has not been unlocked. Redmi 9 requires official unlocking via Mi Unlock Tool (may take up to 720 hours of waiting!).
• 🔄 Phone stuck on logo Mi: Partition damaged boot. The solution is to reflash the phone via SP Flash Tool with the official ROM.
• 🔒 "This device is locked" after reset: Protection activated Mi Cloud Lock. You need to enter the linked account details or provide proof of purchase to the service center.
• 📵 The sensor does not work after a reset: The partition may be damaged touch. Only flashing or replacing the touchscreen cable will help.

If you encounter an error not listed here, check the error code in Mi Community or on forums like 4PDA. Often the solution has already been found by other users.

⚠️ Attention: On the forums you can find advice to use commands like fastboot oem unlock to unlock the bootloader on Redmi 9. These methods do not work on devices with MediaTek i can lead to a complete loss of functionality of the communication module. Use only official tools from Xiaomi.

7. Alternative methods: when the reset does not help

If after the reset the problems remain (the phone overheats, does not hold a charge, does not connect to the network), the reason may be hardware failure. In such cases, software methods are powerless. Consider the following options:

• 🔧 Diagnostics at the service center: Problems with the battery, motherboard or Wi-Fi module require professional repair.
• 📦 Replacing the firmware with a custom one: For example, LineageOS or Pixel Experience can return the device performance, but will require unlocking the bootloader.
• 💰 Updating hardware: Replacing the battery or flash memory often solves problems with random reboots.

Before taking your phone for repair, check whether the warranty period has expired. Xiaomi provides a 12-month warranty from Redmi 9 from the date of purchase, but it does not cover damage caused by unofficial firmware or mechanical impacts.

How to check originality firmware?

Open Settings → About phone → MIUI version. If there are letters at the end of the firmware name RU (for example, V12.5.1.0.RJCRUXM), this is the official firmware for Russia. Availability CN or IN indicates firmware for other regions, which may cause problems with the operation of the mobile network.

FAQ: Answers to common questions questions

Is it possible to reset Redmi 9 without losing data?

No, a full reset (Wipe Data) always deletes user data from the internal memory. The only way to save information is to make a backup copy in advance via Mi Cloud, Google Drive or manually copy the files to your PC.

The phone asks for the old password after resetting. What to do?

The protection has worked. Mi Account Lock. You need to enter the account details Xiaomithat was linked to the phone before the reset. If you do not remember your password, restore it on the website account.xiaomi.com. If the phone was bought secondhand and the previous owner did not unlink the account, contact him or support Xiaomi with proof of purchase.

The reset was interrupted and now the phone does not turn on. How to fix it?

Most likely, the firmware partition is damaged. Try:

1. Log in Fastboot Mode (Volume down + Power) and reflash the phone via Mi Flash Tool.
2. If that doesn’t help, use SP Flash Tool with the official firmware for Redmi 9 (search by code lancelot).
3. As a last resort, contact a service center.

How to reset Redmi 9 if the screen does not work?

If the sensor does not respond, but the phone turns on:

1. Connect the phone to the PC via USB and use the mouse via OTG adapter (if supported).
2. Reset via ADB (command adb shell recovery --wipe_data).
3. If the screen is completely black - only Fastboot or Recovery (you need to guess the moment of pressing the buttons by vibration).

For Redmi 9 with a non-working screen, it is better to immediately contact the service - independent repairs can aggravate the problem.

Will it be possible will the phone work after a reset if it was rooted?

After the reset, root access (Magisk or SuperSU) will disappear, but traces of modifications may remain in the system partition. If the phone does not turn on after the reset or gets stuck in a loop, you will have to reflash it with a “clean” official one. firmware via Fastboot. Also check the status SafetyNet - after rooting it could be broken, which will affect the operation of banking applications.