How to Downgrade the Firmware on Xiaomi Redmi 8

Owners of popular Xiaomi smartphones often face a situation when the system starts to work unstable after an automatic update and the battery runs out faster than usual, especially for the Redmi 8 model, which, despite its age, is still in demand, but new versions of the MIUI shell can be too heavy for it.

The procedure of rollback of the system requires care and strict adherence to the algorithm of actions, as any error can lead to data loss or software failures. Restoring the previous version allows you to return the speed of the interface and stability of the communication modules. Below we will discuss in detail all the stages of preparation and direct installation of earlier software.

Before you start taking action, you need to clearly understand the difference between a regular update and the downgrade procedure. If the standard update is “over the air” and safe, then the downgrade is an interference with the system files of the device. It is critical to understand that when you move to an older version of Android or MIUI from a newer version, you completely clean up the internal memory of the smartphone.

Reasons to Return to Old Version

Users rarely go through complex firmware manipulations without good reason, most often caused by critical operating system errors that cannot be corrected by standard reset methods. Since the release of the global updates MIUI 12 or MIUI 13, many owners of Redmi 8 complained about overheating of the processor and lag in the menu.

Another common reason is that banking or enterprise software is incompatible with new security patches, and sometimes developers impose restrictions that block specific software needed for everyday use, in which case a return to a proven build becomes the only option.

It’s also worth mentioning the issues with autonomy: New energy saving algorithms don’t always work correctly on mid-range and low-end devices; code optimization for older Qualcomm Snapdragon processors can be performed poorly, leading to a quick battery drain in standby mode.

⚠️ Warning: Before starting any work, make sure the battery level is at least 60%. interruption of the firmware process due to discharge can turn the phone into a "brick».

And the subjective experience of using the interface is also important, as many users prefer the design and logic of older versions of MIUI to make them more user-friendly and intuitive, and returning to the familiar environment increases the comfort of the device.

Preparation of the device and choice of firmware

The most important step in the whole process is finding the right file to install. You need to find an archive with a firmware version that is lower than the one installed on your smartphone at the moment. For Redmi 8 (codenamed olive or olivelite), the files must strictly conform to the model, otherwise the device may stop loading.

You can determine the current version of the software in the settings menu by selecting “About Phone”. Write down the build number to understand which file to look for in archives. Firmware files usually have the.zip extension and weigh about 2-3 gigabytes. You should only download them from trusted resources, such as the official MIUI forum or specialized portals like 4PDA.

There are two main types of firmware: Recovery and Fastboot. For users who do not want to unlock the bootloader, only Recovery is suitable. However, it has limitations: you can not go through the version (for example, from MIUI 12 directly to MIUI 10), you can only roll back one version.

If you plan to roll back, for example, from the Chinese version to the global version, or move through several versions of MIUI, you will need to unlock the bootloader through the Mi Unlock Tool utility. This process takes from 7 to 168 hours of waiting and requires linking the Mi Account account to the device.

Recovery method through Recovery Mode

This is the easiest way to do this, and it doesn't require a computer if the firmware file is already loaded into the phone's memory, and it's suitable for cases where you need to roll back one version or reinstall the current one to fix the bugs. First, place the downloaded.zip archive in the root directory of internal memory or on a microSD card.

Then you go to recovery mode. To do this, turn off your smartphone and press the power and volume buttons at the same time. When the Mi logo appears on the screen, release the power button, but continue to keep the volume until the Recovery menu appears.

In the menu that appears, select the language (usually English and Chinese), then click on "Wipe Data" and select "Wipe All Data" as the old firmware installation will be blocked by the security system without a complete reset.

Once the data is cleared, the phone will return to the main Recovery menu. Select "Install" or "Install from storage", find your firmware archive and confirm the action. The installation process will take 5 to 15 minutes.

Use of Fastboot and Mi Flash Tool

For deeper interventions in the system, especially when changing the firmware region (for example, with the CN Global) or in case of a serious rollback, Fastboot mode is used. This method requires connecting to a computer via a computer. USB-cable and the presence of the installed utility Mi Flash Tool. the archive with firmware in this case should be unpacked into a separate folder, the path to which does not contain Cyrillic symbols.

Put your smartphone into Fastboot mode, holding the power and volume buttons at the same time when the device is turned off. Connect your phone to your PC. The Windows Device Manager must determine the Android Bootloader Interface. If the drivers do not stand up automatically, you will have to install them manually.

Launch the Mi Flash Tool on behalf of the administrator. Press the "Select" button and specify the path to the folder with the unpacked firmware. At the bottom of the window, select the firmware mode: "Clean all" or "Clean all and lock" (clean and lock the bootloader).

Once you select the mode, press Flash. The process will go faster than Recovery mode, but requires a stable connection. Do not turn off the cable until you have a message about successful completion.

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Use the original. USB-cable and connect it directly to the motherboard ports (back of the system unit) to avoid signal loss during firmware.

Possible mistakes and ways to solve them

Downgrade users often encounter the error "Can't verify update": this is the standard system protection that prevents the installation of an older version on top of the new one without completely cleaning the data.

Another common problem is the anti-rollback error, which is protection against rollbacks to very old versions that contain security vulnerabilities, and if the rollback counter in the bootloader is higher than in the file you are running, you will be banned forever, so you will have to look for firmware with a current or higher security index.

Sometimes the process can freeze at a certain percentage or the phone can go into an endless restart (bootloop). In this case, do not panic. Try to re-enter Recovery mode and make a full reset. If this does not help, the only way out is to flash through Fastboot using a more recent version of the software to "override" the errors.

⚠️ Note: If the phone is no longer on after the firmware 10 For a minute, try to press the power button on 15-20 If the screen is black and there is no reaction, plug the charger in and wait.

It is also worth mentioning the problems with IMEI. If custom or modified builds are incorrectly firmware, network settings can fly off. To avoid this, use only official stock firmware for the downgrade procedure.

Data recovery and system setup

Once you've successfully completed the procedure and downloaded it for the first time, you'll see a welcome screen, just like you would on a new device. Because the downgrade process involves full formatting, all your contacts, photos and apps will be deleted. Make sure you back up your important data in advance.

The easiest way to reconnect is to sync with your Google account, and when you log in, all numbers, emails, and calendar events will be automatically downloaded, and photos can be returned via Google Photos or copied back from your computer if you have manually backed up.

The first 10-15 minutes of the phone may be unstable while the background optimization of applications and indexing files. Don't load the device with heavy tasks immediately after turning on, let the system "stay".

It is also recommended to check the main modules: camera, microphone, speakers and fingerprint sensor. Make sure that the Android version and build number in the settings match the desired. If everything works correctly, you can safely start installing the necessary applications.

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Complete data reset is a prerequisite for a successful downgrade, ignoring this step will lead to verification error or cyclical reboot.