The process of obtaining superuser rights and deep modification of the operating system begins with unlocking the bootloader. For owners of a Redmi Note 12 Pro smartphone, this procedure allows access to custom receptacles such as TWRP and full control of the file system. However, standard Xiaomi security measures require a number of conditions to be met, without which access to the system partition will remain closed.
Device owners often face the need to remove pre-installed software or install global firmware versions on Chinese models. Unlocking the bootloader is the only legal way to do this without disrupting the integrity of hardware components. It is important to understand that this step irreversibly clears the device’s internal memory of all user data.
In this guide, we will take a detailed look at the algorithm for the Redmi Note 12 Pro model, based on the current requirements of the manufacturer. We will analyze the preparation of the account, setting the developer parameters and working with the Mi Unlock Tool utility.
Preparation of Mi Account and device binding
The first and most critical step is to set up your account correctly. The MIUI security system requires that the account be linked to a specific hardware identifier. This requires you to log in to your smartphone settings and log in to your Mi Account login. Make sure that the profile contains a valid mobile phone number, as confirmation codes may come to it.
Next, you need to activate developer access. Go to the Settings menu. → About the phone and start quickly clicking on the line Version MIUI until notice of the inclusion of the regime. → So, developers will have the functionality that they need, and that's where the primary linkage of the device to the company's servers comes in.
In the developer menu, find Mi Unlock Status and click on it. The system will request confirmation via SMS or automatic verification. Once this operation is successful, a binding message will appear. 168 hours (7 days) must pass between binding and direct unlocking, during which you cannot log out or reset your account.
⚠️ Note: If you reset before 7 days, the waiting timer will be reset and the binding procedure will have to start again.
It is important to keep a stable Internet connection in the background during the week of waiting. Xiaomi servers periodically check the status of the anchor, and the lack of a network can lead to an error when trying to unlock. Also make sure that the device does not have beta versions of firmware that can conflict with the verification server.
Installation of drivers and tools on PC
To interact with a smartphone in deep diagnostic mode, a computer running the Windows operating system is required. At this stage, special drivers are installed that allow the PC to recognize the device in Fastboot mode. Without correctly installed drivers, the unlock utility simply will not see the connected gadget.
It is recommended to download the official Mi Unlock program from the manufacturer's website. Using third-party versions or modified builds can lead to the account being blocked for security reasons. After downloading the archive, unpack it into the root folder of the disk, avoiding paths with Cyrillic characters to eliminate encoding errors.
ADB and Fastboot drivers are often installed automatically with the utility, but in some cases, manual installation through Device Manager is required. Connect the phone in normal mode, find it in the hardware list and update the driver by pointing the path to the folder with the Mi Unlock utility. This guarantees a stable connection when you go to bootloader mode.
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Use the original. USB-cable and connect it directly to the port on the motherboard, avoiding USB-hubs to prevent communication breakdowns during critical operations.
Check the connectivity by running the command line and entering the command fastboot devices. If the response displays the serial number of the device, then the drivers are installed correctly and the computer is ready to go. Otherwise, repeat the procedure for installing drivers or try another one. USB-port.
Redmi Note 12 Pro is now in Fastboot mode
Fastboot is a special diagnostic interface that allows you to perform low-level operations with the software. To enter this mode on a switched-off Redmi Note 12 Pro device, you need to press the volume and power down buttons simultaneously, hold them until you see an image of a hare repairing an android or the Fastboot inscription on the screen.
There is an alternative software login method that is convenient if physical buttons are damaged or are not working stable. You can activate the Reboot option in Fastboot mode via the Developer Menu. You can also use the adb reboot bootloader command if the computer is already configured. ADB-linkage.
When you first enter this mode, the system can warn you that the device is not protected, this is the standard Android security warning, confirming that the bootloader is locked, and to continue unlocking, you need to connect the smartphone with a cable to the computer where the Mi Unlock utility is already running.
☑️ Checking before unlocking
Make sure the device screen does not go out during the process, although this is rare in Fastboot mode. If the screen is out and the device is in sleep mode, just press the power button once to activate the display.
Unlocking process with Mi Unlock Tool
Launch the Mi Unlock Tool on your computer and log in to the same Mi Account that was previously linked to your smartphone. The program will automatically check device status and server time. If all conditions are met, the Unlock button will become active. Click on it to start the process.
The system will issue a warning that all data on the device will be destroyed, a necessary security measure to prevent data from being stolen from the phone, confirm the action, and the unlocking process will begin, and the progress bar will show the execution steps, which take from a few seconds to a couple of minutes.
During execution, the utility communicates with the Xiaomi server to receive the unlock token. If the wait timer (7 days) has not expired, the program will report an error and indicate the exact time remaining until the wait is completed.
Once successfully completed, the smartphone will automatically restart. The first boot after unlocking can take longer than usual, as the system reassembles the application cache and checks the integrity of the file systems.
Solving common errors and timers
The most common problem is the "Couldn't verify device" error, which occurs if the account in the utility on the PC does not match the account on the phone, or if not enough time has passed since the link, in which case you need to double-check the login data and make sure that the status in the Mi Unlock Status item displays the correct latency.
Another common error is connected to network connection or lock-in by the provider.Sometimes Xiaomi servers are temporarily unavailable or blocked. IP-Addresses when you're in frequent contact. Try using mobile Internet instead of Wi-Fi or using it. VPN-Connection to a region where services are stable.
If the utility freezes at 50% or 99%, this may indicate problems with the system. USB-Use another cable, preferably original, and connect it to ports. USB 2.0 on the back of the system unit. USB 3.0 sometimes causes driver conflicts when working with loader legacy modes.
⚠️ Note: Multiple attempts to unlock from different accounts or devices can lead to a temporary lock on the device itself. IMEI.
If a critical error occurs that is not solved by standard methods, you can try reflashing the device to EDL mode, but this will require an authorized service center account. For ordinary users, the best solution is to wait and repeat the attempt after 24 hours.
Impact of Unblocking and Security Measures
Once the bootloader is unlocked, Android security changes are irreversible, some banking applications and services that use Google Pay or Mi Pay are shut down due to a breach in the integrity of the verification system, and additional manipulations, such as root rights and installing Magisk modules, will be required to circumvent these restrictions.
The manufacturer's warranty obligations can be waived if it is proved that the device malfunction is caused by interference with the program code. However, the fact that the bootloader is unlocked does not constitute physical damage, and in many service centers, the bootloader is simply blocked back before being put into repair.
Data security is now entirely up to the owner. Anyone with physical access to the device can theoretically flash custom firmware and access files if they have not been deleted. Therefore, it is recommended to use reliable encryption methods and not store critical information on unlocked devices without additional protection.
Can we get it back to the way it was?
It is important to note that OTA-updates may stop coming automatically or be installed with errors, often after major updates are released. MIUI Owners of unlocked devices are forced to wait for stable builds to appear or sew them manually through Recovery or Fastboot mode.
Compatibility and status table
Below is a table that shows the impact of different loader statuses on the functionality of the device, which will help you make an informed decision about the need for a procedure.
| Parameter | Locked (Locked) | Unlocked (Unlocked) |
|---|---|---|
| Installation of custom Recovery | Impossible. | Available. |
| Getting Root Rights | Impossible. | Available. |
| Work of banking applications | Complete. | Partial / Required bypass |
| Garantie manufacturer | It's still there. | Under question/Removed |
| Data security in the event of theft | Tall. | Medium (requires encryption) |
Analyzing the data from the table, it can be concluded that for the average user who does not plan to deep modify the system, unlocking is not practical, but for enthusiasts and developers, this is a necessary step to unlock the full potential of the Redmi Note 12 Pro.
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Unlocking the bootloader is a compromise between security/stability and freedom to modify the system.