Budget smartphone owners often look for ways to expand the functionality of the device, and unlocking the bootloader on the Xiaomi Redmi 9C NFC is the first and most important step in this direction, which opens up access to custom recavators, obtaining superuser rights and installing alternative operating systems.
Before taking action, you need to be clear about the consequences: unlocking Bootloader on a Redmi 9C device irreversibly deletes all user data, including photos, contacts and installed applications. In addition, this action can affect the operation of some banking applications and services Google Pay, although there are methods to circumvent these restrictions.
In this article, we will discuss in detail each step of preparing and performing the unlock, you will learn how to properly configure a Mi Account, where to download the necessary utilities and how to transfer the smartphone to a special mode for interaction with the computer, following the algorithm will minimize risks and successfully complete the procedure even for a beginner.
Preparation of Mi Account and device binding
The first and mandatory step is to link your device to your Mi Account. Without this step, the unlocker will simply not allow the process to start by giving an error about the account mismatch. Go to your smartphone settings, select About Phone, and click on the MIUI version several times to activate the developer mode.
Once you activate the hidden menu, you need to go to the advanced settings. Find the developer section and turn on the factory unlock option. The system will alert you to the security risks and the need to wait. IMSI-SIM card code with servers of Xiaomi.
⚠️ Warning: After enabling Factory Unlock and locking the device, you may need to wait 7 to 168 hours. Do not try to bypass the timer by re-binding - this will reset the time counter.
Make sure that the phone has a SIM card installed on the operator through which you log in. Mobile traffic is mandatory for the correct operation of the authorization server. Wi-Fi in this case can only be used to download updates, but not for primary binding.
Necessary software and driver installation
Successful communication between the computer and Redmi 9C NFC requires specialized software. The main tool is the Mi Unlock Tool, which should be downloaded exclusively from the official website of the developer. Using third-party builds can lead to leakage of personal data or infection of the system with viruses.
The critical point is to install the correct ADB and Fastboot drivers. Without them, your computer will not be able to recognize your smartphone in a special mode. It is recommended to install a universal driver package from Xiaomi, which automatically determines the necessary software for your version of the Windows operating system.
☑️ Checking readiness for unlocking
It is also worth preparing a quality USB-Cheap charging cables often do not support data transmission, which will lead to permanent connection breaks at the most critical time. USB-ports on the computer motherboard, connecting the device directly, without using_hub_owls.
Redmi 9C NFC is now in Fastboot mode
Fastboot mode is a special diagnostic interface that allows you to flash through the device and control the bootloader at a low level. To get into it on the Redmi 9C model, you need to completely turn off the smartphone. Make sure that the device is not in sleep or hibernation mode.
After turning it off, press the volume down button and the power button at the same time, hold them until the image of a hare in an eardress cap repairing an android appears on the screen, or the FASTBOOT inscription in orange, signaling that the phone is ready to connect to the PC.
⚠️ Warning: If the screen is black, but the computer has made a sound of the device connecting, try to press the buttons again, previously disconnecting the cable. Do not connect the phone in Fastboot mode to the computer without running Mi Unlock program.
There is an alternative method of logging in through the software menu if the buttons are physically damaged. You can use the ADB command by typing adb reboot bootloader in the command line. However, the classic button method is the most reliable and does not require additional manipulation with debugging over USB.
What to do if the Fastboot mode is not turned on?
Unlocking process with Mi Unlock Tool
Run the Mi Unlock Tool on your computer and log in using the same account you linked to your phone. Connect your Fastboot smartphone to your PC. The program must automatically identify the device and show its status. If the Unlocked status is already complete, the procedure has already been completed.
Press the "Unlock" button, and you'll see a warning that all data will be destroyed, and you'll confirm the action by pressing "Unlock anyway," and you'll start the unlock process, which takes between seconds and minutes, and the progress bar will be displayed on the phone screen.
Once successfully completed, the phone will automatically restart. The first run may take longer than usual, as the system will clear memory partitions and recreate the file structure.
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If the process is 99 percent dead, don't panic or turn off the cable, which is often normal behavior when you finalize changes to the partition table, wait for the restart to come on your own, or for the success message to come on.
Common mistakes and ways to solve them
During the unlock process, Redmi 9C NFC users often encounter error codes, the most common being the "Couldn't verify device," which indicates that the account in the program does not match the account associated with the phone, or that not enough time has passed since the link.
Another common problem is the error "Unlock failed: Try again after XXX hours." This means that Xiaomi's servers have not yet given permission, in which case you just need to wait for the specified time without untidying the device.
Below is a table with the main error codes and methods for their elimination:
| Error code | Description of the problem | Decision |
|---|---|---|
| 10008 | Network error | Check the Internet, change DNS, use mobile hotspot |
| 10013 | Account untied | Re-connect the device in the developer settings |
| 20025 | Wrong password | Change your Mi Account password and re-enter Mi Unlock |
| Device is locked | Waiting timer | Wait 168 hours since the first tether |
If the program doesn't see the phone, check the Windows Device Manager. The device should show up as Android Bootloader Interface. If it's "Unknown Device" instead, you need to manually update the driver, pointing the path to the Xiaomi driver folder.
What to do after unlocking the loader
Once you unlock successfully, you can install customized recavators like TWRP, which allow you to make full backups and install modified firmware, which is especially true for the Redmi 9C if official MIUI support stops.
But remember security measures: Unlocked bootloaders reduce data protection, if the phone falls into the wrong hands, an attacker can easily access the contents of the memory if it is not encrypted by additional means, and applications using SafetyNet will stop working.
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An unlocked bootloader is the key to full customization, but it removes security guarantees and can block the operation of banking applications without additional settings.
Recovery of banking applications will require installing Magisk patches or using modules that hide the fact of unlocking, which requires a deeper knowledge of Android modification, but allows you to enjoy the full benefits of an open system without losing functionality.