Getting advanced access rights on Android smartphones is a powerful tool for those who want to have full control of their device. Owners of budget models like the Xiaomi Redmi 9A often resort to this procedure to remove system debris that cannot be removed by standard methods. System modification opens the door to install specialized modules, kernel-level ad blockers and deep customization of the interface.
Before you start active actions, you need to clearly understand that interfering with the Bootloader system partition will void the manufacturer's official warranty. In addition, any error when flashing can turn the phone into a "brick", although in most cases the device is subject to recovery. This article examines in detail all the steps from unlocking to installing Magisk.
It is important to understand that modern versions MIUI They have a few layers of protection that you have to bypass, and you're going to need not only a computer with Internet access, but also a stable computer. USB-Connection: The process of unlocking a bootloader on Xiaomi requires a mandatory wait of 7 to 168 hours after submitting an application. Without this step, further manipulation is technically impossible, so be patient and follow the instructions Step-by-step.
Preparation of the smartphone and the necessary tools
The first step is always to carefully prepare the workplace and the device itself. USB-cable, preferably original or certified, as cheap counterparts often do not provide stable data transfer, which is critical for working with Fastboot. 9A This is at least 60% so that the device does not turn off at the most inopportune time.
You need to install the current ADB and Fastboot drivers on your computer. Without these components, Windows will not be able to properly interact with your phone in debugging mode. There is a universal package Minimal ADB and Fastboot, which makes it much easier to install the necessary libraries and environment variables.
Remember to make a full backup of all important data. The bootloader unlocking procedure involves completely resetting the device to factory settings. All contacts, photos and files will be deleted without the ability to recover through the standard shopping cart.
Here is a list of what you should have at hand before you start:
- 📱 Smartphone Xiaomi Redmi 9A switched-on.
- 💻 PC or laptop running Windows, macOS or Linux.
- 🔌 Correct. USB-data-line.
- ☁️ Mi Account Account Registered at least 30 days ago.
Activation of the developer mode and unlocking the bootloader
You should start by activating hidden system functions. → On the phone and press quickly 7-10 once-point version MIUI, until you get a notification that you've become a developer, and then you'll be on the menu. → New options will be available for developers.
Enable Factory Unlock and USB Debugging. It's also important to link your device to your Mi Account in the Mi Unlock settings menu. To do this, click on "Mi Unlocker Status" and add your current account. The system will warn you of the risks - agree and wait for the binding confirmation.
☑️ Checking before unlocking
Now, let's get to the unlocking procedure itself: Turn off your phone and press the volume buttons (up and down) and the power buttons at the same time to go to Fastboot mode. Connect your phone to your computer and launch the Mi Unlock Tool utility. If done correctly, the program will detect the device and check the status of the account.
⚠️ Warning: If the program says you have to wait 168 hours, don't try to fool the system by re-linking your account, the timer will reset and you'll have to wait again.
Installation of custom TWRP Recovery
Once successfully unlocked, the standard recovery mode is replaced with custom. There are several versions of TWRP for Redmi 9A (codename dandelion), but it is recommended to use stable builds that support data encryption. Download the twrp.img image file and place it in the ADB tool folder on your computer.
Put your smartphone back in Fastboot mode again and connect to your PC. Open the command line in the tool folder and type a command to temporarily load the recover. This won't set up TWRP forever, but will let it run for further manipulation.
fastboot boot twrp_dandelion.imgIf you have a TWRP menu on your phone, you're compatible. However, if you want the Recovery to be saved after you reboot, you need to flash it. In the TWRP menu, select Install, click the "Install Image" button at the bottom of the screen, and select the same image file with the Recovery section. After you have firmware, click "Reboot System."
It is important to note that when you first load after installation TWRP The system may require you to enter a password to unlock the screen, and if you don't remember it or type it incorrectly, the phone may go into a reboot cycle. PIN-code.
Root rights installation process through Magisk
Only Magisk is used to obtain super-user rights in modern times. Old methods like SuperSU are outdated and do not work on Android. 10/11, which is on the Redmi 9A. Download the current one. APK-Magisk file from the official GitHub repository.
Run the Magisk app on your phone. If you have a stock firmware file (boot.img), you can patch it through the app. However, Redmi 9A often makes it easier to use a ready-made zip archive or install feature directly in the recavator. Select Installation → Select and Swipe File and select the downloaded Magisk installer.
Once the installation process is complete, the app will suggest restarting the device. You'll agree. Once the phone is turned on, the Magisk icon will appear in the app menu, and root rights for system processes will appear in the application list.
What if Magisk doesn’t see root?
You can check for rights using specialized apps from the Play Market, such as Root Checker. Run a test, and if it goes well, you will get a message that the device has root access. Now you can remove system applications like Mi Browser or GetApps, which are usually hidden from the user.
Possible problems and ways to solve them
In the process of system modification, users often encounter common errors, one of the most common being "Device is locked" when trying to run through Fastboot, which means that the bootloader is either unblocked or was locked automatically after the system update.
Another problem is Bootloop, where the phone is endlessly rebooted, which happens if the TWRP version is not compatible with the Android version, or if the system partition is damaged, which is helped by entering Fastboot mode and firmware stock image boot.img command fastboot flash boot.img.
The table below will help quickly diagnose the problem by symptoms:
| Symptoms. | Probable cause | Decision |
|---|---|---|
| Mi Unlock doesn't see the phone | Not installed drivers or bad cable | Replace the cable, install Xiaomi drivers |
| Error "Waiting for device" | USB debugging is not enabled | Check the developer's settings |
| Cyclical reboot | Incompatible TWRP or Broken Boot | Switch to stock boot.img |
| The camera's not working after the root. | Magisk Module Conflict | Disable modules in safe mode |
The Impact of Root Rights on Security and Banking Applications
Having superuser rights changes the security profile of a device, and banking applications and services like Google Pay (now Google Wallet) can fail because of a modified system, a security mechanism that prevents data theft.
To get around this limitation, Magisk needs to enable Hide or use the MagiskHide module, and it may also require renaming the Magisk package to hide it from detectors, but it’s a cat-and-mouse game, with banks constantly updating detection methods.
Some applications, especially those related to finance and corporate security, may not work properly even with hidden rights. If your Redmi 9A is the primary payment device, it’s worth weighing the pros and cons before installing root rights.
⚠️ Note: Root rights make the device more vulnerable to malware. Malware programs, once they gain access to root, can steal any data, including passwords and encryption keys.
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Root rights give full control, but remove the level of protection provided by the manufacturer for ordinary users.
Return to factory settings and warranty
If you decide to abandon the modifications or plan to hand over the phone to the service center under warranty, the system must be returned to its original state. Simply uninstall the Magisk application is not enough - the bootloader will remain unlocked, which will immediately catch the eye of specialists.
For a full return, download the official firmware for your regional version through the Mi Flash Tool. In Fastboot mode, select the "Clean All" option, but not "Clean All and Lock" if you're afraid of making a mistake with the firmware region.
Once the runoff is run and the bootloader is locked, the phone will look like a new one from the store, but traces of interference with the software can remain in the logs, so the full warranty can be lost forever if it is proven that the malfunction is caused by the modification of the software.
To sum up, the Xiaomi Redmi 9A is great for experimentation, thanks to the availability of tools and a large community, but the responsibility for the result lies solely with the user.
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Always make a full backup of personal data before returning to the service center, as employees have the right to reset the phone to factory settings without warning.