Owners of modern smartphones are often faced with restrictions imposed by the manufacturer or operating system. Android 12 has brought many improvements in the field of privacy and security, which has significantly complicated the process of obtaining extended access rights. However, the need for deep customization has not disappeared. Users tend to remove pre-installed software, overclock the processor, or install specialized modules that require full control over the system.
The procedure for obtaining this version of the OS is radically different from the methods used in the era of Android 9 or 10. Old utilities like KingRoot or OneClickRoot have long lost their relevance and can harm the device. The modern industry standard is a tool root access this version of the OS is radically different from the methods used in the era of Android 9 or 10. Old utilities like KingRoot or OneClickRoot have long lost their relevance and can harm the device. The modern industry standard is a tool Magiskthat allows system intervention without violating the integrity of the partition system. This makes it possible to pass security checks in banking applications, although it requires additional settings.
Before you begin technical manipulations, you need to understand all the risks. Interfering with the bootloader and system partitions can lead to irreversible consequences. The device warranty is canceled immediately after unlocking the bootloader, and if the firmware is unsuccessful, the phone can turn into a “brick”. This article describes in detail a safe algorithm of actions, tested on various models of devices with Qualcomm and MediaTek processors.
Preparing the device and backing up data
Getting started requires careful preparation, since the very first step of the procedure will lead to complete removal all user data. Unlocking the bootloader will initiate a factory reset for security purposes. Therefore, creating a full backup is not just a recommendation, but a requirement. Use Google cloud services or local copying to your computer via ADB.
You will need a computer with drivers installed for your smartphone. To work with the command line, you need a minimum set of tools Platform-tools, including utilities adb and fastboot. Download them from the official developer resource and unpack them into a convenient directory. Also make sure that the device's battery charge is at least 60% to avoid power outage at a critical moment.
An important step is to enable debugging mode. Without this, the computer will not be able to send commands to the phone. Go to settings, find “About phone” and click on the build number 7 times to activate the developer menu. Then in the section that appears System → For Developers activate the "USB Debugging" switch.
⚠️ Attention: Unlocking the bootloader on some models (for example, Verizon or devices with Snapdragon processors with locked BL) may be technically impossible or lead to failure of the camera modules and Widevine L1 DRM protection.
☑️ Ready for the procedure
Unlocking the bootloader
The bootloader is a app that which runs before the operating system and verifies the digital signature of the downloaded software. By default, it is blocked by the manufacturer to prevent the installation of modified systems. To get root access it must be unlocked. The process varies depending on the brand: Xiaomi requires you to obtain the code through the official portal, Motorola and Sony provide the code via IMEI, and Pixel and OnePlus allow you to do this with a simple command.
Connect your smartphone to the PC in Fastboot mode. To do this, you usually need to hold down a key combination (often Volume down + Power) with the device turned off or enter the command adb reboot bootloader. Make sure your computer can see the device by entering status check in the terminal. If everything is correct, you will see the serial number of the device in the list of connected devices.
Direct unlocking is performed by a command that erases all data. After completing it, the device will reboot and you will need to go through the initial Android setup again. Don't be alarmed if the phone takes longer to boot than usual - this is normal behavior during the first initialization after resetting the security partitions.
For Xiaomi devices, be sure to link your Mi Account in the developer settings and wait 168 hours (7 days) before requesting the unlock code, otherwise the server will return an error.
| Brand | Method of obtaining code | Difficulty | Risk of loss of warranty |
|---|---|---|---|
| Google Pixel | Fastboot command | Low | Yes |
| Xiaomi / POCO | Official Mi Unlock portal | Medium (standby) | Yes |
| Samsung | Download mode + button combination | Low | Yes (Knox) |
| OnePlus | Command fastboot | Low | Yes |
Installing custom recovery and patching the image
The modern method of obtaining superuser rights does not require installing a third-party recovery (for example, TWRP) as a mandatory step, although this often simplifies the process. The main focus has shifted to patching the boot image (boot.img) using the Magisk application. You need to find the exact firmware for your model and version of Android 12, corresponding to the current build on the phone.
Extract the file boot.img from the archive with the firmware (usually this is fastboot firmware). Transfer this file to your smartphone and open the Magisk app. Click the “Install” button next to Magisk, select the “Select and patch file” option and specify the path to boot.img. The application will create a new file with the name of the type magisk_patched_[random].img in the downloads folder.
Return the patched file to your computer in the tools folder Platform-tools. Put your phone back into Fastboot mode. Now you need to flash the modified image into the bootloader section. This operation replaces the standard kernel with a kernel with an embedded access rights manager, which is the key point of the entire procedure.
What to do if the device has A/B partitions?
On smartphones with seamless updates (A/B partitions), the firmware command may differ. Often you need to specify the slot explicitly, for example: fastboot --slot=_a flash boot magisk_patched.img. Make sure that you are flashing the image into the active slot, otherwise the phone will not boot.
fastboot flash boot magisk_patched_[random].imgFinal installation of Magisk and checking rights
After successfully writing the image to the device's memory, you must reboot. Enter the command fastboot reboot or use hardware buttons. The first launch may take several minutes as the system checks integrity and initializes new components. If the phone boots into normal mode, congratulations, the most difficult stage is over.
Open the Magisk application. If the installation was successful, you will see the app version and the “Installed” status. Now you can check if you have root access. To do this, install any application to check rights, for example, Root Checker, or try executing a superuser command through the terminal. The system will ask for permission to access - grant it.
It is worth noting that simply having root access does not mean that the system is fully ready to work with protected content. Many applications, especially banking and gaming, use Google SafetyNet or new Play Integrity API to detect tampering. You may need to enable the Zygisk feature and configure a DenyList in Magisk settings to hide the fact that specific applications are rooted.
Successful installation of Magisk does not guarantee that all banking applications will work out of the box. Additional configuration of hiding root access through modules or Zygisk settings is required.
Solving common problems and errors
The process does not always go smoothly, especially on Android 12 with its enhanced protection. One of the common problems is “bootloop” - an endless reboot of the device. This occurs if the patched image is incompatible with the kernel or was corrupted in transit. In this case, you need to return to Fastboot mode and flash the original boot.img from stock firmware to restore functionality.
Another common situation is the lack of access to the Internet after unlocking the bootloader on some Xiaomi or Huawei models. This is due to license verification at the modem level. The solution often lies in flashing the modem or using specific scripts, however, such actions require high qualifications.
- 🔴 The device does not see the computer: Try another USB cable, another USB 2.0 port (black ports are often more stable than blue 3.0 for fastboot) or reinstall the drivers manually through the device manager.
- 🟠 "Command not allowed" error: Make sure the bootloader is actually unlocked. On some devices, the status is orange when booting, but the lock command may be at the OEM level.
- 🟢 Magisk does not open the application: If the icon disappeared after a reboot, the system may have rolled back the changes. Try installing Magisk via TWRP custom recovery, if it is available for your model.
⚠️ Attention: Menu interfaces and item names may differ depending on the manufacturer's shell (MIUI, OneUI, ColorOS). Always check the documentation for your specific model before entering commands.
Users often wonder why root access disappear after an OTA (over-the-air) update. This is expected behavior: the update replaces the patched partition boot with the original one. To maintain your permissions after the update, do not reboot immediately. Open Magisk, select “Installation” → “Installation in an inactive slot (after OTA)”, wait until it is completed and only then click “Reboot”. This will allow you to apply the patch to the new version of the system automatically.
Security measures and maintaining system stability
Having superuser rights makes you fully responsible for the state of the system. An error in one script or deletion of a critical system file can lead to the smartphone not working. Regularly make backups of important data and create restore points through custom recovery before installing new modules.
Be careful with modules that change system fonts, animation or interface elements. On Android 12, code compilation (ART) mechanisms have become stricter, and incompatible modules can cause serious lag or battery drain. Remove unused modules and monitor logs in the Magisk application if you notice strange behavior of the device.
Remember that the security of your personal data now depends only on you. Malware with root privileges can gain access to everything on the phone, including encrypted password vaults. Only download modules and apps from trusted sources, such as the official Magisk repository or the XDA Developers forum.
Does unlocking the bootloader void the warranty forever?
In most cases, yes. Manufacturers record the fact of unlocking in special flags (for example, Samsung Knox e-fuse), which are physically burned out. Even if you block the bootloader back, the service center will be able to see traces of interference. However, some brands allow you to re-block BL without visible traces, but the risk of warranty denial remains high.
Is it possible to use banking applications with root access?
Yes, it is possible, but it requires configuration. You'll need to enable Zygisk in Magisk settings, add banking apps to the DenyList (exclusion list), and possibly install a module to hide the Magisk app itself (package rename). Sometimes a module like Play Integrity Fix is required to bypass new Google checks.
What are A/B partitions and how do they affect the firmware?
Seamless Updates technology uses two sets of system partitions (A and B). While you are working in one, the second is updated in the background. When flashing a boot image, it is important to understand which slot you are in. An error in slot selection can cause the phone to boot into an old, unflashed system, creating the illusion of a failed procedure.
Is it safe to use Universal SafetyNet Fix?
Using third-party modules to bypass security checks always carries a risk. Modules may stop working after updating Google Play Services. In addition, some banks have learned to detect the use of such fixes. It is recommended to use them only if you understand the principle of operation and are prepared for the possible blocking of access to the application.
How to return the phone to its original state (Stock)?
For a full return, you need to lock the bootloader again (fastboot oem lock command or similar), but before that you must flash the original images of all partitions (boot, system, vendor, recovery) from stock firmware. An attempt to lock the bootloader with modified partitions is guaranteed to brick the device.