Users of the Xiaomi Mi A2 Lite smartphone often face a situation when the next update arrives, the system begins to work unstable, there are errors in the interface, the battery is discharged faster or the mobile network disappears, in which case the only effective solution is a downgrade - a return to the previous, more stable version of the operating system.
The rollback process on this device has its own unique features, since the smartphone is part of the Android One program. This means that the standard methods of firmware through Recovery will not work here because of the blocking of version verification, USB-cable and strict adherence to the algorithm of actions, so as not to turn the device into a “brick».
Before you take action, you need to understand the risks. Any interference with the code carries a potential risk of data loss. However, if done correctly, you will return your gadget to its former speed and stability, getting rid of the bugs of the fresh patch.
Why you should consider rolling back the Android version
Often, users wonder why they should go back at all when the update brings new features, because optimizing MIUI or the pure shell of Android One for a particular hardware doesn’t always go smoothly, especially for models of the past like the Mi A2 Lite, the resources of the Snapdragon 625 processor are not unlimited.
Newer versions of Android require more RAM and processing power. After the upgrade, you may notice that apps open longer, and the heating of the case becomes noticeable even for simple tasks.
In addition, new builds often have critical bugs that were not identified in the beta phase: it can be Bluetooth malfunction, GPS module failures or problems with fingerprint recognition.
- 📉 Decreased performance and the appearance of lags in the interface after the update.
- 🔋 A sharp increase in battery consumption in standby mode.
- 📡 Unstable operation of communication modules (Wi-Fi, 4G, Bluetooth).
- 🐛 The emergence of system errors and spontaneous reboots.
It's important to understand that a downgrade is not just an old image setup, it's a complete rewriting of the partitions of the system, so you need to be responsible in choosing the version of the firmware, choosing the one that has proven itself best.
Preparation for the downgrade procedure
The first and most important step is to prepare the workspace and tools. You will need a Windows computer, as drivers and utilities for Xiaomi work best in this environment. Also make sure that the USB cable is serviceable and capable of transmitting data, not just charging the device.
The next step is to create a full backup. Because the rollback process involves completely clearing memory, all your contacts, photos and apps will be destroyed. Use Google Account to sync contacts and cloud services for media files. Don't neglect this step, data recovery without a backup will not be possible.
You also need to download specialized software, the main tool will be the Mi Flash Tool, which allows you to flash devices in Fastboot mode, and you will need ADB and Fastboot drivers, as well as the firmware itself in.zip format or an unpacked folder with the system image.
☑️ Checklist of preparations
⚠️ Note: The firmware process through the Mi Flash Tool completely erases the device's internal memory. Make sure you save all important files to an external medium or to the cloud before starting the procedure.
Unlocking the loader: a mandatory stage
The Android One, which is the Mi A2 Lite, has a locked bootloader, a security mechanism that prevents the installation of software not signed by the manufacturer, and the Bootloader must be unlocked to perform a downgrade.
The official method of unlocking requires an application via Mi Unlock and a wait of 7 to 30 days. However, there are alternative methods for some models, but they may not be safe. If you already have the bootloader unlocked, this stage can be skipped. If not, this is a prerequisite for accessing Fastboot mode with write rights.
Once you have permission to unlock, you need to activate the developer mode. Go to Settings → About Phone and click on the build number seven times. Then, in the Developer menu, turn on the option “OEM Unlocking” and “Debugging by USB”.
What to do if the unblocking status does not change?
It is important to note that unlocking the bootloader resets the software warranties and can affect the operation of some banking applications, although this is often solved by hiding root rights or using a magick.
Finding and downloading the right firmware
The key to a successful rollback is choosing the right version of the operating system: you can’t just take any firmware from the Internet; it must be compatible with your particular model (daisy is codenamed Mi A2 Lite), and it must be lower than the one installed now, but not too old to avoid compatibility conflicts.
Look for firmware is best on official forums or proven resources specializing in Xiaomi. You need a global version (Global) if your region is not China. Pay attention to the type of firmware: Mi Flash Tool often requires a Fastboot version (unpacked), although some utilities can work with Recovery images provided the bootloader is unlocked.
| Parameter | Description | Importance |
|---|---|---|
| Code name | daisy | Critically. |
| Type of firmware | Fastboot / Recovery | Tall. |
| Region | Global / EU / CN | Tall. |
| Android version | Must be below the current one. | Critically. |
When downloading, pay attention to the checksum of the file, if provided by the author. This ensures that the file was not corrupted during download and does not contain viruses. A damaged firmware file is one of the common causes of failed rollback attempts.
Instructions for rollback through Mi Flash Tool
Now, let's get to the practical part: make sure that Qualcomm and Android Bootloader Interface drivers are installed on the system. Run the Mi Flash Tool on behalf of the administrator. Unpack the downloaded firmware into the root of the C disk so that the path to the files is short and contains no Cyrillic characters.
Turn off your smartphone completely. Then press the Volume Down + Power button combination and hold them until the Fastboot logo appears.
In Mi Flash Tool, press the Refresh button. If the drivers are installed correctly, the device with its serial number will appear in the list. Press Select and specify the path to the folder with the unpacked firmware. At the bottom of the window, select the Clean all option, which guarantees a complete reset and installation of the clean system.
The command to check the connection in the CMD (optional):
fastboot devices
fastboot getvar allPress the Flash button and wait for the process to be completed. The progress bar will be filled in green. Under no circumstances turn off the cable or turn off the computer at this point. The process can take anywhere from 2 to 10 minutes.
⚠️ Note: If there is a code error during the firmware process (for example, 0x8 Or "Flash All Error" - try changing USB-Reconnect the device to another port or use a different version of the Mi Flash Tool.
Solving Typical Errors and Problems
Even if you follow the instructions strictly, there can be unforeseen difficulties, and one of the most common problems is that the device is not detected by the computer in Fastboot mode, in which case, check the Windows Device Manager. If you see a device with a yellow exclamation point, you need to update the driver manually, indicating the path to the files. adb/fastboot.
Another common bug is Anti-rollback. This is a security mechanism that prevents you from installing an older version of the bootloader or critical partitions than those already written. If you try to roll back to the version that is blocked by anti-rollback, the phone may stop turning on. Always check the developer forum for anti-rollback status for your version.
If the phone went into an endless reboot after firmware, try resetting via Recovery. To enter it, press Volume Up + Power. Select Wipe data/factory reset. If that doesn't help, you may need to reflash the device again, selecting the Clean all and lock option (with caution, only for global firmware on global devices).
- 🔌 Connection error: Replace USB-cable to the original or quality analogue.
- 💾 Memory error: Free up space on the computer's system drive (need to be near) 5-10 GB).
- 🚫 Antivirus Block: Temporarily disable antivirus and Windows firewall.
- 🔋 Battery discharge: If the phone sits down in the process, charge it when off to 50% and try again.
💡
The secret to success in rollback is the use of the original USB-cable USB 2.0, and install the version of the drivers that corresponds to your Windows operating system.