How to install root rights on Xiaomi Mi A3: a safe guide with error analysis

Getting root rights to the Xiaomi Mi A3 is a detail-focused task, and this model, launched in 2019 on Android One, has unique features: a closed bootloader by default, a specific partition structure, and Google’s restrictions on modifying system files. Unlike MIUI devices, you can’t use standard tools like the Mi Unlock Tool, which requires a combination of formal and informal methods.

In this guide, we will take a look at the 2026 root rights, based on the latest firmware updates, how to bypass OEM Unlock, install TWRP custom receivers, and flash Magisk without losing data, and focus on common errors such as why a bootloader might freeze on the Xiaomi logo after unlocking, and how to fix it.

Warning: the procedure voids the warranty and risks system stability, but for experienced users, root offers the possibility of fine-tuning performance, removing embedded software, and installing modified firmware.

Preparation of the device: what to do before unlocking

Before starting the process, make sure your Mi A3 meets the key requirements. First, check the firmware version: root rights are only installed on Android 10/11/12 (versions below 10 are not supported by modern tools). Second, the battery should be at least 70% - this is critical, since interrupting the process during the unlocking stage of the bootloader can lead to a "brick" of the device.

List of mandatory actions before the start:

• 📱 Backup all data (photos, contacts, messages) through Settings → System system → Backup. Use Google Drive or physical storage.
• 🔧 Enable Developer Mode: Go to Settings → About the phone and 7 times click on the Assembly Number.
• 🔓 Activate. OEM Unlock and Debugging by USB The developer menu, if you have an option. OEM Unlock is inactive – connect your device to the Internet and wait 24 hours (Xiaomi’s requirement for new devices).
• 💻 Install it on an Android PC SDK Platform-Tools (includes fastboot and adb) and drivers for Xiaomi Mi A3.

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If the OEM Unlock option is gone after the update, try rolling back to the previous firmware version via the Mi Flash Tool. This often solves the unlock lock problem.

The Mi A3 feature: Due to Google’s policy on Android One devices, additional account confirmation may be required when unlocked. Link the device to your Mi Account in advance (even if you use pure Android) – this will simplify the process in the event of a reset.

Unlocking the bootloader: official and informal methods

The bootloader on the Mi A3 is locked at the hardware level, so unlocking it is a must. The official way involves using the Mi Unlock Tool utility, but for Android One devices it often doesn't work, so we use a workaround through fastboot.

Step-by-step instructions for unlocking:

1. Turn off your phone and press Volume Down + Power to enter fastboot mode.
2. Connect your device to your PC and execute the command: fastboot oem unlock If FAILED error appears (remote: 'Device is locked. Cannot flash images') - use the alternative command: fastboot flashing unlock
3. On the phone screen will appear a warning - confirm the unlock button Volume up.
4. Wait until the process is completed (it takes 1-2 minutes) and restart the device with the command: fastboot reboot

Once unlocked, the phone will reset to factory settings. On the Xiaomi Mi A3 with firmware newer than Android 11, unlocking the bootloader will automatically activate the AVB (Android Verified Boot) protection, which will require additional action when installing TWRP.

TWRP installation: which receptacles to choose for the Mi A3

For Mi. A3 There are several versions TWRP, But not all of them are compatible with the latest firmware. 3.5.2_9-0) Often causes errors in partitioning. /data. We recommend using a modified version from the developer mauronofrio - it takes into account the features of the disk markup on the Mi. A3.

Download the current image TWRP forum XDA (look for the file twrp-3.6.2_9-0-laurel_sprout-mauronofrio.img). Installation is performed via fastboot:

fastboot flash recovery twrp-3.6.2_9-0-laurel_sprout-mauronofrio.img


fastboot reboot recovery

If a password request appears in TWRP after rebooting (due to /data encryption), follow the following steps:

• 🔐 Enter yours. PIN-lock-screen code or pattern lock.
• 📁 Go to Wipe. → Format Data, enter yes and confirm formatting.
• 🔄 Reboot back to the TWRP (important: not in the system!).

Successful entrance to the river|No errors in installation /data|Sensor work on the menu TWRP|The possibility of creating a backup-->

Warning: on some firmware after installation TWRP And standard firmware can overwrite the recavers when you boot them, so to avoid that, right after you install them. TWRP patch it. disable_antirollbak.zip (available on the same forum XDA).

Install Magisk: Getting root rights without losing data

Magisk is a universal root-rights tool that does not violate the integrity of the system partition (unlike the outdated SuperSU).For the Mi A3, Magisk v26.1+ is suitable, as it supports Android 12 and works correctly with AVB 2.0.

Installation instructions:

1. Download the latest Magisk.apk from GitHub and rename it to Magisk.zip.
2. Move the file to your phone or flash drive (the /sdcard partition should be available in TWRP).
3. In TWRP, select Install, specify the path to Magisk.zip, and swipe for confirmation.
4. After installation, restart to the system (Reboot → System).

If after restarting the device hovers on the logo or gives an error Bootloop, follow the following steps:

⚠️ Attention: On the Mi firmware A3 Android 11/12 After installing Magisk, you may need to disable forced encryption. TWRP file disable_forceencrypt.zip (available XDA) and re-install Magisk.

Check for root rights using the Root Checker app or the command in the terminal:

su

If the command returns the # invitation, the root is installed successfully. You can now start configuring Magisk modules (for example, ViPER4Android for sound or LSPosed for modifying system applications).

Typical errors and their solutions

Even with the exact instructions, Mi A3 users often encounter problems, and here is a table of the most common errors and ways to fix them:

If your error is not listed in the table, check the logs in TWRP ( /tmp/recovery.log). Often the problem lies in the incompatibility of the firmware and backpack versions. For example, TWRP 3.5.2 does not work with Android 12 - version 3.6.2+ is required.

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90% of the errors in getting root on the Mi A3 are due to the wrong version of TWRP or ignoring the step of disabling forced encryption. Always check the compatibility of files with your firmware!

How to bring it all back: rollback of changes

If the root license has been granted, or you have decided to return the warranty, you can complete a full rollback to factory condition.

1. Download the official firmware for your model from the Xiaomi website (choose the Fastboot version).
2. Unpack the archive and launch the script flash_all.bat (for Windows or flash_all.sh (for Linux/Mac) firmware.
3. Connect the phone in fastboot mode and wait for the firmware to be completed.

After that, the bootloader will remain unlocked, but all modifications (including TWRP and Magisk) will be removed. To return the bootloader lock, use the command:

fastboot flashing lock

⚠️ Attention: Locking the bootloader after installing custom firmware can lead to a "brick." Before executing this command, make sure that the device is official firmware without modifications.

If you plan to sell your phone, we recommend you also reset your Mi Account through Settings → Accounts → Mi Account → Delete your account. This will remove the device’s link to your profile.

What gives root on Xiaomi Mi A3: practical examples

Root rights to the Mi A3 give you access to features that are not available in the standard configuration, and here are some useful scenarios:

• 🚀 Remove embedded applications: With Titanium Backup or Adb, you can uninstall Google Duo, Mi Pay, and other system programs that cannot be uninstalled by standard methods.
• 🎵 Sound enhancement: Magisk modules like ViPER4Android or JamesDSP allows you to configure the equalizer for headphones and speaker, compensating for the weaknesses of the Mi audio system A3.
• 🔋 Battery Optimization: Apps like Greenify or Battery Charge Limit help limit background activity and set a charge limit (e.g. 80%) to extend battery life.
• 📱 Customization of the interface: Through Substratum or LSPosed, you can change icons, fonts and even animations of the system without installing custom firmware.

But remember, some banking applications (like SberBank Online or Tinkoff) can block work on root-righted devices, and Magisk’s Magisk Props Config module, which masks root for selected applications, will help.

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To check the compatibility of applications with root, use the SafetyNet Fix module. It helps you pass the Google SafetyNet check necessary for the operation of Google Pay and some games.

FAQ: Answers to Frequent Questions