How to fully format Xiaomi Redmi 9T: 3 working methods + reinstatement

Xiaomi Redmi 9T — It's a popular smartphone with a price-performance balance, but even it can slow down, make errors, or require a complete system reinstallation. Formatting solves most software problems, from viruses to incorrect updates. However, an incorrect reset can turn your phone into a brick — especially when it comes to manipulating your phone via Fastboot or Recovery.

In this article, you will find three proven formatting methods (including hidden features). MIUI), We'll show you how to compare speed and safety, and how to save important data before resetting. 9T It doesn't respond to commands, how to bypass Mi-account lock after a reset, and why sometimes the phone hangs on the Xiaomi logo after formatting. 9T — failures when resetting via Recovery due to incompatibility of firmware versions and TWRP.

If you have never worked with me before ADB Or Fastboot, don't worry, we'll give you step-by-step screenshots and video examples (links to official sources), and for power users, spoilers with advanced commands and tips on optimizing the system after a reset.

Preparation for formatting: what must be done before the dump

Factory reset erases all user information: contacts, messages, photos, installed apps, and even some system settings (such as network settings), which is why preparation is a critical stage that many miss.

Let's start with the most important thing: backup. 9T There's a backup feature built in, but it doesn't store all the data:

• 📱 Contacts and Messages: sync with Google Account (check Settings) → Accounts. → Google → Synchronization. The alternative is exporting to the file. VCF via the Contacts app.
• 📷 Photos and videos: copy to PC or upload to Google Photos/Mi Cloud, folder. DCIM Weighs the most – don’t forget it!
• 🔑 Passwords and logins: export from Google Smart Lock or use password managers (e.g. Bitwarden).
• 🎮 Rescue: If you play Genshin Impact, PUBG Mobile or other projects – link your account to a post office or social network.

Pay special attention to the application data, for example, WhatsApp allows you to create a local backup of chats in Settings. → chat → Backup, and Telegram stores media files in the cloud, but channel settings are not. For complete certainty, use third-party utilities like Swift Backup (requires root rights) or Titanium Backup.

⚠️ Note: If you have used the function Block applications in MIUI (For example, for a Gallery or Settings, when you reset, these restrictions will be reset, but the password from the lock screen will remain!

Also check:

• 🔋 Battery charge (minimum 50% – when reset via Recovery, the phone should not turn off).
• 🌐 Stable Internet connection (if you plan to reset via Settings – you will need to download updates).
• 🔐 Access to Mi-account (after resetting, the phone may require login/password input to unlock).

Backup Contacts and Messages|

Copy photos/videos to PC or cloud |

Record passwords from Wi-Fi and accounts |

Check battery power (minimum 50%) |

Make sure you have access to Mi-account|

Disable factory lock (if the phone is tied to the operator)-->

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

This is a good way to turn on the phone, to touch it, and you remember the lock screen password, and the main advantage is that you have minimal error risk, because the system controls the process. MIUI.

Instructions:

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/password/pattern lock from the lock screen.
5. Confirm the action by clicking Delete Everything.

The phone will restart and start the formatting process (it will take 5-15 minutes), and once completed, you will see the screen of the initial setup, as after purchase.

⚠️ Warning: If after reset, the phone requires Mi-account data input and you don't remember it, don't try to guess! After 5 failed attempts, the device will lock for 24 hours.

Advantages of the method:

• ✅ Does not require computer or special knowledge.
• ✅ Maintains integrity of system partitions (low risk of bricking").
• ✅ Automatically reinstalls the latest version MIUI (if there are updates).

Disadvantages:

• ❌ It won’t help if the phone doesn’t turn on or hangs on the logo.
• ❌ Does not delete data from internal memory completely (they can be restored by special programs).

Through the settings menu |

Through Recovery|

Through Fastboot/ADB|

Never dropped it.-->

Method 2: Recovery Mode Reset (for got stuck phones)

If Redmi 9T It doesn't turn on, reboots or hovers on the Xiaomi logo, you'll have to use Recovery mode. It's a built-in recovery environment that works even when your system files are corrupted.

How to log in to Recovery:

1. Turn off the phone (press the power button for 10 seconds).
2. Press the volume button (+) and the power button at the same time.
3. Hold them until the Mi logo and Recovery menu appear (usually 5-10 seconds).

In the Recovery menu, use volume buttons for navigation and power buttons for selection. The interface can be in Chinese - navigate by icons:

• 📱 Reboot - Reboot (do not choose!).
• 🗑️ Wipe Data → Wipe All Data – Complete Reset.
• 🔄 Reboot to System – Reboot to system after reset.

After selecting Wipe All Data, confirm the action (usually you need to enter Yes. The process will take 3-7 minutes.

⚠️ Note: Some versions of Redmi 9T (Especially with custom firmware, the Recovery menu may not be available or be in Chinese without the ability to change the language).

Features of resetting through Recovery:

Method 3: Full formatting via Fastboot (for power users)

This method is used when:

• 🔹 The phone does not turn on or respond to buttons.
• 🔹 Recovery damaged or missing.
• 🔹 You need to reflash your phone (for example, after a failed update).

The work will require:

• 💻 Computer with Windows/Linux/macOS.
• 🔌 Cable USB (preferably original).
• 🛠️ Utilities. ADB Fastboot (download from the official Android website).
• 📥 Firmware for Redmi 9T (Download from Xiaomi website by selecting the lime model – code name Redmi 9T).

Step-by-step:

1. Unpack the archive from the platform-tools in a folder on the disk C:\ (for example, C:\adb\).
2. Turn off the phone. Press the volume down button (-) and the power button until the Fastboot and the image of the hare in the eardress cap appear.
3. Connect your phone to your PC. Open the command line. + R → enter cmd → Enter).
4. Go to the folder with ADB: cd C:\adb\
5. Check the device connection: fastboot devices If the phone is determined (the serial number will appear), continue. If not, install Xiaomi drivers or try another cable.
6. Run full reset: fastboot erase userdata fastboot erase cache fastboot reboot

For full flashing (if the phone doesn’t start even after resetting), use the command:

fastboot flash all [name file firmware].zip

Where [name file firmware] is a downloaded firmware file (e.g, lime_global_images_V12.0.1.0.QJQMIXM_20210112.0000.00_10.0_global.zip).

⚠️ Attention: On Redmi 9T With the bootloader lock, the command fastboot flash all will not work - you will need to unlock through the official Mi Unlock Tool. This erases all data and resets the phone to a state of "out of the box".

1. reconnect the cable to another USB-port (preferably) USB 2.0).

2. disable driver signatures in Windows (to do this, type in the command line on behalf of the administrator: bcdedit /set nointegritychecks on).

3.Use the original Xiaomi cable – cheap counterparts often don’t transfer data to Fastboot.-->

5. Typical errors after formatting and how to fix them

Even after a successful reset of Redmi 9T These are the most common problems and their solutions:

🔴 Phone asks for Mi-account entry after reset

It's a protection against theft (FRP — Factory Reset Protection if you have forgotten your account details:

1. Go to the Mi Account website and restore access through the email/phone.
2. If your account is not yours (the phone is purchased by hand) contact the previous owner for unlocking.
3. In extreme cases, use the official Xiaomi service (a purchase check is required).

🔴 The phone hangs on the logo. MI post-discharge

Reasons:

• 🔹 The system partition is damaged (solution: reflash through Fastboot).
• 🔹 Conflict of firmware and Recovery versions (solution: install official Recovery).
• 🔹 Hardware malfunction (solution: diagnostics in the service center).

For diagnosis:

1. Hold the volume.+ + Power and check if Recovery opens.
2. If yes, do the reset again (Wipe Data).
3. If not, run your phone through Fastboot (see Method 3).

🔴 No net after reset

Often associated with resetting settings IMEI Or Baseband:

• 📶 Go to Settings. → SIM-Maps and mobile networks and select the operator manually.
• 🔄 Update your firmware to the latest version (via Settings) → Updating the system).
• 🛠️ If the problem remains, restore it. IMEI via the engineering menu (#4636##) or QCN-file (requires root rights).

💡

If the function is lost after the reset, like NFC or IR-Check the firmware region, for example, the global version. MIUI (Global can disable some features only available in Chinese (China) or Indian (India) firmware.

6 How to Optimize Redmi 9T post-discharge

A clean system is a great way to customize your phone, and here's what you should do right after you format it:

⚡ Disable unnecessary functions MIUI

Xiaomi is known for its abundance of pre-installed services that eat up charge and resources.

• 📊 Analytics MIUI: Settings → Additionally. → Confidentiality → Analytics MIUI.
• 📡 Auto-Update Apps: Google Play → Settings → Auto Update (select "Do not update automatically").
• 🔋 Battery Optimization for System Applications: Settings → Battery → Optimizing the battery → Find Mi Video, Mi Music and other unnecessary apps, select "No restrictions".

🛡️ Set up security.

After discharge:

1. Install. PIN-code or pattern lock (at least 6 characters).
2. Activate device encryption (Settings) → Additionally. → Encryption and credentials).
3. Turn on Google Find My Device for remote management.

🚀 Speed up the system.

A few tricks for smooth work:

• 🎯 Enable Performance Mode: Settings → Special facilities → Performance mode.
• 🗑️ Clean the cache regularly: Settings → Warehouse → Clear the cache.
• 🔄 Turn off animation: activate the developer mode (7 taps according to the version) MIUI In About Phone, then in Settings → Additionally. → For developers, install Windows Animation, Transition Animation and Animator Duration on 0.5x.

💡

To avoid clogging your phone again, install App Cloner to duplicate frequently used apps (like two WhatsApps on the same phone) or Greenify to automatically hibernate background processes.

7. Alternative formatting methods (for specific cases)

If standard methods don’t help, consider these options:

🔧 Dumping through ADB (If the phone is turned on, but the menu is not available)

This is good if the screen is working but the sensor is not responding or the system is getting stuck.

1. Connect your phone to your PC and enable debugging. USB (If not included, this method will not work).
2. Open the command line and enter Adb shell recovery. --wipe_data
3. Confirm the reset on the phone screen (if the screen is working).

🔄 Recovery with the Mi Flash Tool (for bricks")

If the phone does not respond to any commands, only a complete flashing through the Mi Flash Tool remains:

1. Download the Mi Flash Tool from the official website.
2. Unpack the firmware for Redmi 9T (file with extension.tgz).
3. Launch the Mi Flash Tool, select the firmware folder and connect the phone in Fastboot mode.
4. Press Refresh, then Flash, and it takes 5-10 minutes.

⚠️ Note: When using the Mi Flash Tool, select the Clean All option only if you are sure that the firmware is compatible with your model. IMEI other problems.

🔓 Bypassing Mi-account lock (for legal owners only!)

If the phone is locked after a reset and the data from Mi-account is lost, it can only be officially unlocked through the Xiaomi service center with confirmation of purchase. EDL-modes) require special equipment and often lead to failure of the communication module.

FAQ: Frequent Questions About Redmi Formatting 9T