How to Reset Xiaomi Redmi 9T to Factory Settings: A Complete Guide with 3 Methods

Resetting the Xiaomi Redmi 9T to factory settings is a necessary procedure when selling a device, fixing software failures or preparing for firmware. However, an incorrect reset can lead to data loss, blocking the Mi Account account or even “bricking” the smartphone. In this article, 3 proven reset methods (through settings, Recovery and Fastboot), as well as answers to frequent questions: what to do if the phone does not respond to buttons, how to bypass the password request after the reset, and why the device may not turn on.

We will analyze each method taking into account the features of Redmi. 9T (model M2010J19SG), including the nuances of working with MIUI 12/13 If you've never done a reset, start with the first method (through the settings menu). ADB and solving problems with EDL-regime.

⚠️ Warning: Reset removes all data from internal memory, including photos, contacts and installed applications. If you do not back up, it will not be possible to restore the information.

Before you start, check:

• 🔋 Battery charge at least 50%, interruption of the process due to discharge can cause damage to system files.
• 📱 Version MIUI — In Settings → The phone, the Redmi. 9T s MIUI 14+ Additional authentication may be required.
• 🔐 Mi Account details — remember your username and password. Once reset, the device may request them to unlock.

1. Reset via the settings menu (the safest way)

This method is suitable if the Redmi 9T is powered on, touch-sensitive and you have access to the menu.The procedure takes 5-10 minutes and requires no additional tools.

How to do this:

1. Open Settings (the gear icon on the main screen).
2. Go to the About Phone section. → Backup and reset.
3. Select Resetting → Erase all data.
4. Enter. PIN-code or pattern lock if the system requests.
5. Confirm the action by clicking Reset the phone.

The device will restart and start the cleaning process, and the MI logo and progress bar will appear on the screen, and don't interrupt the process, which can lead to a boot cycle.

⚠️ Attention: On Redmi 9T s MIUI 13+ After the reset, you may be asked to confirm your Mi Account, even if you haven't used it, and this is due to the Mi Cloud Activation Lock function. FAQ.

2. Reset via Recovery Mode (if the phone is not turned on)

If Redmi 9T is stuck on the logo, does not respond to touches, or is locked with a pattern lock, use Recovery Mode, which works even when system files are corrupted, but requires physical access to the device buttons.

Step-by-step:

1. Turn off the phone (press the Power + Volume Up for 10 seconds).
2. Hold the Power + Volume Up until the Mi logo appears.
3. Release the buttons when the Recovery menu (black screen with yellow text) appears.
4. Use volume buttons for navigation and power to select.
5. Select Wipe Data → Wipe All Data → Confirm.
6. Once you have finished, select Reboot → Reboot to System.

If the Recovery menu is in Chinese, focus on the location of the items:

• 📛 The first item is Reboot (reboot).
• 🧹 The second point is Wipe Data (data cleanup).
• 🔧 Third item – Connect with MIAssistant (for firmware via PC).

3. Reset via Fastboot (for power users)

The method is suitable if:

• 🔄 Recovery Mode is unavailable or damaged.
• 🖥️ You have a computer with drivers installed. ADB/Fastboot.
• 🔧 You plan to flash custom software after resetting.

This method will require:

• USB Type C C Cable (original)
• Computer with Windows 10/11 or Linux.
• ADB and Fastboot (download from Android)

Instructions:

1. Turn off Redmi 9T and switch to Fastboot mode: Hold Power + Volume Down until the hare appears in the eardress cap
2. Connect your phone to your PC and open the command prompt (cmd) in the folder with the platform-tools.
3. Check the connection command: fastboot devices (should display the serial number of the device).
4. Run reset: fastboot erase userdata fastboot erase cache fastboot reboot

fastboot format userdata


fastboot format cache

This will help with type errors. FAILED (remote: 'Not allowed in Lock State' associated with bootloader lock.-->

Important: Some versions of the Redmi 9T with a locked bootloader (Bootloader) may result in a Fastboot reset error, in which case you need to unlock through the official Xiaomi tool (linked to the Mi Account).

4.What to do if the phone does not turn on after reset

If Redmi 9T is stuck on the MI logo after reset, reboots into the loop, or doesn’t respond to buttons, the reasons may be:

• 🔌 Interrupted resetting process – for example, due to battery discharge.
• 🛠️ Damaged firmware – often found after unsuccessful updates over the air".
• 🔒 Blocking the bootloader - if you previously tried to flash custom software.

Decisions:

1. Repeat the reset via Recovery – sometimes double-execution of Wipe Data helps.
2. Fastboot: fastboot flash boot.img fastboot flash system.img fastboot reboot (download firmware files from Xiaomi's official website).
3. Use EDL mode – if the phone is not identified in Fastboot, this will require an authorized Xiaomi account and the Mi Flash Tool program.

⚠️ Attention: Firmware through EDL on the Redmi 9T s MIUI 13+ Unofficial tools (such as ChinaFirewall) are often blocked, which leads to "bricking." If you are not sure, contact the service center.

5. How to save data before resetting

Even if the phone is locked or not turning on, some of the data can be saved.

• 📱 Backup via Mi Cloud: If your device is connected to your Mi Account, check if backup is enabled in Settings → Mi Account → Mi Cloud → Backup: Photos, contacts and notes can be recovered after reset.
• 🖥️ PC Data Retrieval: If your phone is turned on but locked, connect it to your computer and use programs like Dr.Fone or Tenorshare. 4uKey File Retrieval (not working on all versions) MIUI).
• 🔧 ADB-Backup (for unlocked devices): If debugging is enabled USB (Settings → For developers → Debugging by USB), Follow the command: adb backup -apk -obb -shared -all -f backup.ab This will create a backup.ab file with apps and settings.

What can't be saved:

• 📸 Photos in a folder DCIM, If you are not synchronized with Mi Cloud or Google Photos.
• 📱 Application data (save in games, chats in messengers without cloud backup).
• 🔑 Wi-Fi passwords, if not exported through Settings → Wi-Fi → Additionally. → Exports of networks.

💡

If you are selling Redmi 9T, after reset, be sure to untie the device from the Mi Account in Settings → Mi Account → Devices. This will prevent problems for the new owner with activation.

6. Frequent mistakes and how to avoid them

Even experienced users sometimes make mistakes when resetting.

If you encounter an error that is not in the table, check:

• 🔍 Logs in Recovery – if you crash, you may see a message like E:unknown command or E:footer is wrong. Take a picture of the screen and search for a solution in forums (for example, for example, for a solution, 4PDA).
• 📡 Status. IMEI — After the reset, check if you have dropped off. IMEI (dial *#06#. If zeros are displayed instead of the number, you will need to restore through QCN-file.

FAQ: Answers to Frequent Questions