The Xiaomi Mi 9T Pro is a powerful flagship smartphone, but even it can eventually slow down, make errors, or require a complete system reinstallation. Resetting to factory settings solves 90% of software problems, from freezes to viruses. However, an incorrect reset can turn a phone into a brick, especially if it comes to models with a locked bootloader or custom firmware.
In this article, we have 5 proven reset methods (including emergency ones for broken devices), detailed risk warnings, and data retention instructions. We will understand when you need a soft reset through settings, and when you need a hard reset via Recovery or Fastboot. We will separately focus on the nuances for the Mi 9T Pro with an unlocked bootloader and the MIUI version below 12.5.
1.When you need to reset Xiaomi Mi 9T Pro: 7 obvious reasons
Resetting is not a panacea, but in some cases it is really necessary.
- ๐ข The phone is unbearably slowed down after the update MIUI (This is especially true for the 11 to 12 transitions.+).
- ๐ Forgot the pattern lock or PIN-code and Mi Account is not tied.
- ๐ฆ A virus has been picked up that blocks the installation of an antivirus or changes the settings of the network.
- ๐ฑ The screen doesn't respond to touch, but the device turns on (reset via Recovery can help).
- ๐ You need to sell or transfer the phone โ reset will delete all personal data.
- ๐ง After a failed root access or firmware, the system malfunctions.
- ๐ต The device does not connect to the mobile network after the change SIM-Maps (sometimes helps reset network settings).
But there are also false reasons to reset, like if the battery goes down quickly, check your settings first. โ Battery. โ Battery use. Or if Bluetooth doesn't work, try resetting only your network settings (Settings) โ SIM-maps and mobile networks โ Resetting network settings).
โ ๏ธ Attention: On Mi 9T Pro with unlocked bootloader reset via Recovery could lead to loss TWRP If you're using an informal firmware, first find out if it supports it. OTA-post-reset.
2.Reset preparation: how to save data and not lose important
Resets all information from internal memory, including:
- ๐ธ Photos and videos (including screenshots and downloads from messengers).
- ๐ฑ Contacts that are not synced to Google or Mi Account.
- ๐ฌ Communications in SMS and messengers (if not made backup).
- ๐ฎ Save games (many games don't sync to the cloud).
- ๐ฅ Application settings, Wi-Fi passwords, banking application data.
To avoid losing anything, follow these 3 steps:
- Synchronize data with the cloud: ๐ฑ Contact: Settings โ Accounts. โ Google โ Synchronization. ๐ธ Photo: Use Google Photos or Mi Cloud (but remember, Mi Cloud only gives 5GB for free). ๐ฌ Messages: Mi Messages has a backup option in Mi Cloud.
- Make a local backup: ๐ฑ Through Settings. โ The phone. โ Backup and reset โ Local backups. ๐ป Or connect your phone to your PC and copy files manually (folders). DCIM, Downloads, WhatsApp and others.).
Save IMEI and firmware data:
- ๐ Write it down. IMEI (Type *#06#. Why save IMEI?If the network signal is missing after the reset, IMEI Help you restore it through an engineering menu or service center.
- ๐ฑ Find out the version. MIUI (Settings โ The phone. โ Version. MIUI) โ This will be useful if you need to re-flash the device.
Contacts and photos synced | Backup of messages and applications | IMEI saved and MIUI version | At least 50% battery charged |pattern lock disabled (if any)
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On the Mi 9T Pro with unlocked bootloader, make sure to check if custom Recovery (TWRP) is installed before resetting. If so, a reset via standard Recovery will result in a loss of TWRP and a possible inability to boot.
3. Method 1: Soft reset via the settings menu (the safest)
This method works if:
- โ The phone is turned on and reacts to touch.
- โ Remember your password or pattern lock.
- โ No critical system errors (e.g., infinite boot).
Instructions:
- Open Settings (the gear icon on the main screen).
- Go to About Phone โ Backup and Reset.
- Select Settings Reset.
- Click Delete all data and confirm the action.
- If you ask. PIN-code or password - enter it.
- Wait for the reboot (it will take 3-10 minutes).
When you reset, the phone will turn on as new.
- ๐ Choose a language and region.
- ๐ถ Connect to Wi-Fi.
- ๐ Sign in to your Google or Mi Account (if you have been linked).
โ ๏ธ Warning: If the phone requires you to enter the old password after resetting (even if you reset it), this means that the security mechanism has been activated. FRP (Factory Reset Protection: To unlock, remember the data from the last Google account tied.
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If the phone is slower than before after reset, try turning off the system animation. To do this, activate the developer mode (7 times click on the MIUI version in the settings) and in Settings โ Additional โ For developers, set all animations on Off.
Method 2: Reset via Recovery Mode (if the phone is not turned on)
This method will be useful if:
- ๐ต The phone does not respond to the screen (but switches on).
- ๐ Hangs on the Mi or Fastboot logo.
- ๐ Forgot the password and login to the settings is impossible.
Instructions for entering Recovery:
- Turn off the phone (press the power button for 10 seconds if it freezes).
- Press the power button + increase volume and hold for 10-15 seconds until the Mi logo appears.
- Release the buttons when you see the Recovery menu (black screen with blue text in English or Chinese).
Further action:
- Use volume buttons for navigation and power button for confirmation.
- Select Wipe Data โ Wipe All Data (or Clear Data in older versions).
- Confirm the action (usually you need to choose Confirm or Yes).
- Once you have finished, select Reboot โ Reboot to System.
| Recovery menu item | What's he doing? | Should I choose? |
|---|---|---|
| Reboot | Phone reboot | No. |
| Wipe Data | Deletes all user data (except the system) | Yes. |
| Wipe Cache | Clears the app cache (does not delete personal data) | No (but it can help with hanging) |
| Connect with MIAssistant | Mode for firmware through PC | No. |
If you don't have Wipe Data in Recovery, you have custom Recovery (TWRP) installed.
- Select Wipe โ Advanced Wipe.
- Check Dalvik/ART Cache, System, Data, Internal Storage.
- Swipe for confirmation (remember that this will delete all internal memory!).
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Recovery doesn't remove MIUI updates, but it does return all settings to factory settings. If the problem was firmware, this method won't help, you need to reset via Fastboot.
5. Method 3: Fastboot Reset (for power users)
This is the most radical method, which is to completely reinstall the firmware, removing all data, including updates.
- ๐ฑ The phone doesnโt even load in Recovery.
- ๐ง You need to roll back the firmware to an older version.
- ๐ Broken bootloader after a failed root or firmware.
This method will require:
- ๐ป Computer with installed Xiaomi drivers and Mi Flash Tool.
- ๐ Cable USB Type-C (preferably original).
- ๐ฑ Firmware for Mi 9T Pro (download from the official Xiaomi website).
Instructions:
- Turn off the phone.
- Press the power button + volume reduction to enter the Fastboot (a hare in a hat-eared hat will appear).
- Connect the phone to the PC.
- Start Mi Flash Tool, select the downloaded firmware (unpack it into a folder without Cyrillic!).
- Press Refresh โ the program must detect the device.
- Select Clean All mode and press Flash.
- Wait for the end (10-20 minutes) and the phone will reboot automatically.
โ ๏ธ Attention: On Mi 9T Pro with a locked bootloader Mi Flash Tool will not work without authorization of the Mi Account. If you do not unlock the bootloader officially, this method will not work โ you will need to first obtain permission through Unlock Tool.
If the phone has been stuck on the Mi logo for more than 15 minutes after firmware:
- ๐ Try to go to Recovery and make Wipe Cache.
- ๐ฑ If it doesnโt work, repeat the firmware by selecting Clean All and Lock mode (but this will block the bootloader!).
6. Method 4: Reset by Find My Device (if the phone is lost or stolen)
If you canโt physically access your phone (for example, itโs lost or stolen) but you have a linked Google account, you can try resetting remotely:
- Go to the Find My Device website.
- Log in to the same Google account that was on your phone.
- Select your Mi 9T Pro from the list of devices.
- Press Erase Data. โ Clean the device.
- Confirm the action (you will need to enter a password from your Google account).
Limitations of the method:
- ๐ต The phone must be connected to the Internet (via mobile network or Wi-Fi).
- ๐ If the device was enabled the developer mode with debugging USB, reset may not work.
- ๐ฑ After the reset, the phone will not disconnect from your Google account โ it can be found again through Find My Device.
If the phone is turned off, Find My Device will show its last known location, but the reset will only be done after you connect to the network.
7. Method 5: Reset via engineering menu (for advanced users)
This method is suitable if you only need to reset certain settings (for example, network or sound), without affecting personal data. However, it requires caution - incorrect actions can disrupt the communication module or camera.
Instructions:
- Open the phone app and dial the code: ##4636##
- Select Phone Information (or Phone Information).
- Scroll down and find the Reset or Reset button.
- To reset your network settings, dial ##72626###
What can be reset through the Engineering Menu:
| Code. | Action. | Effects of consequences |
|---|---|---|
| ##4636## | Engineering menu | View information about the battery, network, statistics |
| ##7262626## | Resetting network settings | Removed stored Wi-Fi and mobile network data |
| ##36446337## | Equipment test | Checking the camera, speakers, sensors |
โ ๏ธ Note: Do not change the settings in the engineering menu unless you know what they are intended for, for example, changing the Band Selection settings may cause you to lose your network on certain frequencies.
8. Frequent mistakes and how to avoid them
Even experienced users sometimes make mistakes when resetting. TOP-5 problems and solutions:
- ๐ The phone turned off during the reset. โ Connect to the charger and repeat the procedure. If it doesn't turn on, try charging from another device (sometimes the problem is in the cable).
- ๐ After reset, requires an old password (FRP) โ You need to enter the data from the last Google account, and if you don't remember, contact the service center with proof of ownership.
- ๐ฑ Hangs on the Mi logo after firmware โ Try resetting the cache via Recovery or repeating the firmware with the Clean All selection.
- ๐ต Mobile network missing after reset โ Check it out. IMEI (If it is Null, you will need to restore it via an engineering menu or service.
- ๐ง The camera or speaker is not working. โ Maybe the settings in the engineering menu are wrong.
If the phone is worse than before, check:
- ๐ฑ Version MIUI โ Sometimes automatic updates install raw firmware.
- ๐ Battery condition โ if worn out, even after resetting will be lags.
- ๐ฒ Availability of background applications that load the system (check in Settings) โ Annexes โ Launched).
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If the problems remain after the reset, they are likely related to the hardware (memory, motherboard, battery), in which case only diagnostics in the service center will help.