Users of Xiaomi and Redmi smartphones often encounter a situation where automatic system updates bring more problems than benefits. Instead of the expected performance increase, owners Redmi 8 notice accelerated battery drain, system errors and unstable interface operation. In such cases, the only reasonable solution is to return to a previous, more stable version of the operating system. The rollback process is not a standard Android function, and therefore requires a certain technical literacy and attentiveness from the owner of the gadget.
Before taking active steps, you must clearly understand that using standard menu tools Settings it is impossible to remove an already installed update. The MIUI system does not provide a “Rollback” or “Delete patch” button in the user interface. The only working method is a complete flashing of the device using a computer and specialized software. This means that you will have to go through the procedure of unlocking the bootloader, which will entail the complete deletion of all data.
It is important to be aware of the risks associated with tampering with the system memory partition. Wrong actions can lead to the fact that the smartphone turns into a “brick” and stops responding to commands. Resetting rights to unlock the bootloader (Mi Unlock Status) is possible only once every 168 hours (7 days), so each attempt must be carefully planned. In this article we will analyze all the stages of preparation, the necessary tools and the sequence of actions for a safe return to the old firmware.
Risk assessment and device preparation
You should start with a cold one analysis of the situation. If your Redmi 8 works fine, but you're just not happy with the new menu design, consider whether the game is worth the candle. The rollback procedure is complex and time consuming. However, if the MIUI update caused critical malfunctions in the operation of the model or touchscreen, then returning to the factory version is a necessity. In the process, you will lose all your data, so creating a backup is a mandatory step that cannot be ignored.
You will need a computer running Windows, a working USB cable and a stable Internet connection. It is also critical to charge your smartphone battery to at least 60%, and preferably to 80%. During the flashing process, the device will actively consume energy, and a sudden shutdown may compromise the integrity of system files. Make sure you know your Mi account and its password, since without this data, unlocking the bootloader is impossible.
⚠️ Attention: Unlocking the bootloader is officially allowed only after waiting 168 hours (7 days) from the moment you submit an application in the Mi Unlock application. If you try to unlock the device earlier, the process will fail.
To work, you will need special ADB and Fastboot drivers, as well as the Mi Flash Tool utility. Without them, interaction with the system partition at a low level is impossible. Download software only from official resources or trusted forums to avoid introducing malicious code into your system. Untested firmware builds may contain security vulnerabilities.
Required tools and software
The success of the operation directly depends on the quality of the preparation of the instruments. You cannot get by with standard Windows tools, since they cannot work with Xiaomi Flash mode protocols. The first step is to install the Xiaomi USB Drivers. Without them, the computer will not see the smartphone in Fastboot or EDLmode. After installing the drivers, you need to download an archiver, for example, 7-Zip or WinRAR, to unpack the firmware files.
The key element is the firmware itself. For Redmi 8 (code name olivelite) you need to find the Fastboot version of the desired version of Android. It is important not to confuse the Global, China and EU versions. If you try to install Chinese firmware on a global device without changing the region, you will get a cyclic reboot or an installation error. The firmware file must have the extension .tgzand not .zip.
☑️ Preparing for flashing
You will also need a app Mi Unlock Tool to unlock the bootloader. This is an official utility from Xiaomi that communicates with the company's servers to verify user rights. The app interface is simple, but it requires authorization through a Mi account. Make sure that this particular phone is linked in your account settings, otherwise the utility will display a binding error.
Unlocking the bootloader
This is the most difficult and time-consuming stage in the entire process. A bootloader is a app that runs before the operating system and verifies the integrity of the software. It is blocked by default to prevent installation of uncertified firmware. To unlock it you need to enable developer mode. To do this, go to Settings → About phone and click 7 times on the MIUI build number.
After activating the developer menu, go to Settings → Advanced settings → For developers. Find the item OEM unlocking and activate it. Then select Mi Unlock status and click “Add account and device.” The system will warn you about the risks and require you to connect to Wi-Fi. After successfully linking your account, you can proceed to waiting.
⚠️ Attention: After linking the account in the menu “Mi Unlock status” must wait 168 hours (7 days). An attempt to unlock before this period will result in a countdown timer, and the procedure will have to start again.
When the waiting period has expired, turn off the phone and simultaneously hold down the Volume down and Powerbuttons until a hare repairing the android appears on the screen (Fastboot mode). Connect your phone to your PC, launch Mi Unlock Tool and click the “Unlock” button. If everything is done correctly, the bootloader will be unlocked, and the phone will reboot and clear all data.
What to do if Mi Unlock says “Couldn't verify device”? This error often occurs if you try to unlock your phone with an account different from the one linked in the developer menu. Also make sure that the phone has a SIM card of the operator for which the account is registered, or use mobile data instead of Wi-Fi when linking.-->
Searching and downloading an old firmware version
Finding suitable firmware is a task that requires care. You need exactly Fastboot ROM for the model Redmi 8 (olivelite). You can find archives on the Xiaomi website or trusted resources like miui.com. Pay attention to the region
Global Version is suitable for most users outside of China. For the Android version, choose the one that was originally installed on the device or the one that has proven itself stable.
The firmware file weighs about 2-3 GB, so downloading may take time. After downloading the archive .tgz need to be unpacked to the root of drive C or any folder with a short path, for example C:\rom\. The path to the folder must not contain Cyrillic characters or spaces, otherwise the firmware utility will not be able to find the files and will generate an error. Inside the unpacked folder there should be a file flash_all.bat or a script for Linux/Mac.
There are two types of firmware: with data recovery (recovery) and with full cleaning (clean). To roll back the Android version, it is recommended to use the full wipe method to avoid conflicts between file libraries of different versions of the system. This guarantees that the old firmware will install “cleanly”, without tails from the new version of MIUI.
Installation process via Mi Flash Tool
Now we move on to the actual installation. Run the app Mi Flash Tool as administrator. Press the Refreshbutton to make sure that the app sees the phone connected in Fastboot mode. In the address bar at the top, specify the path to the folder with the unpacked firmware. If the path is correct, your serial number will be displayed in the list of devices Redmi 8.
At the bottom of the app window there are three firmware modes. To remove the update and roll back the system, select the mode clean all (clear all). This mode completely erases the userdata and cache sections, which is necessary when changing the Android version. The mode save user data may not work when trying to rollback to an older version, since the data structures may be incompatible.
Press the button Flash and wait until the process completes. A green progress bar will show the status. At the end, if everything went well, the status will change to Success, and the phone will automatically reboot. The first boot can last up to 10-15 minutes, this is normal for the initial system setup process.
| Parameter | Value for Redmi 8 | Note |
|---|---|---|
| Code name | olivelite | Important for searching firmware |
| Firmware mode | Fastboot | Requires unlocked BL |
| File format | .tgz | Not .zip and not .rom |
| Driver | Xiaomi USB Driver | Required for Windows |
| Cleaning mode | clean all | Full removal data |
Frequent errors and methods for solving them
Various errors may occur during the firmware process. One of the most common is Error: Miss matching image. This means that you are trying to flash firmware from a different model or region. Check the device code name and region matching. An error may also occur if the path to the files contains Russian letters. Rename the folder to Latin.
If the Mi Flash Tool app freezes at the “Waiting for device” stage or writes Error: Can not receive packet, check the USB cable. Use an original cable or a high-quality analogue that supports data transfer, not just charging. Try a USB port, preferably USB 2.0, and reconnect the device, first rebooting it into Fastboot mode again.
If Mi Flash Tool gives the “Not enough memory” error, try closing other apps that consume a lot of RAM, or use a computer with more RAM. Restarting the utility as an administrator also helps.
Another problem is a cyclic reboot after flashing the firmware. If your phone keeps rebooting and shows the MI logo, the recovery partition or bootloader may be damaged. In this case, you may need to flash the firmware via EDL mode (Emergency Download), which is only possible through an authorized service center account or using paid tools like Chimera or UnlockTool.
⚠️ Attention: app interfaces and the location of menu items may differ slightly depending on the version of Mi Flash Tool and the version of MIUI. Always check the latest documentation on the official Xiaomi forum.
Optimizing the system after a rollback
After successfully returning to the old version of Android, the system will be as clean as after purchase. However, to Redmi 8 worked as efficiently as possible, it’s worth carrying out basic optimization. Remove pre-installed bloatware if possible, or limit its background activity. Go to Settings → Battery and configure power saving modes for frequently used applications.
It is important to disable automatic system updates so that history does not repeat itself. Go to Settings → About phone, click on the MIUI version and in the menu (three dots) select Update settings. Disable "Auto-update" and "Download updates over Wi-Fi". This will prevent accidental installation of an unwanted package in the future.
The main result: Removing an update on Android is only possible through a complete flashing of the device with an unlocked bootloader, which requires careful preparation and backup data.
Don't forget to regularly backup important data to external media or to the cloud. Older versions of Android may have security vulnerabilities, so be careful when installing apps from unknown sources. Use only trusted application stores and anti-virus protection built into MIUI.
Is it possible to remove an update without unlocking the bootloader?
No, standard Android tools do not allow you to roll back to the previous version of the system. Without an unlocked Bootloader, you will not be able to write the old firmware to the system partition. Attempts to do this through Recovery mode will also be blocked by the version check.
Will the warranty be reset after unlocking the bootloader?
In most regions, unlocking the bootloader will officially void the software warranty. If the service center finds traces of tampering with the software, you may be denied a free repair. However, the bootloader can be blocked back, but traces may remain in the logs.
What to do if the phone stops turning on after flashing the firmware?
If the screen is black and the phone does not respond to buttons, try holding down Power + Volume up for 15-20 seconds. If the Mi logo appears, but the download does not proceed, try flashing it again in Fastboot mode. If there is no reaction at all, you may need EDL mode and the help of specialists.
Will photos and contacts be lost after uninstalling the update?
Yes, the firmware process with the “clean all” mode completely erases the internal memory of the phone. All photos, contacts, messages and installed applications will be deleted. Save important data to your computer or to the cloud service Mi Cloud / Google Drive in advance.