Owners of Xiaomi, Redmi and POCO smartphones often face a situation where, after a scheduled system update, the device begins to work unstable, the battery runs out faster, interface artifacts appear, or applications fly out with critical errors, in which case the only effective solution is to return to the previous, more stable version of the operating system.
The rollback process, or downgrade, requires carefulness and strict adherence to the algorithm of actions. The wrong sequence of steps can lead to locking the bootloader or completely failure of the device. However, with a competent approach, you can return the phone to its previous speed and stability without losing important data if you act prudently.
In this article, we will discuss two main methods: a simple method through the recovery menu and an advanced method through the Fastboot mode. You will learn where to look for verified files, how to prepare a computer and what nuances the regional binding of firmware has. Following the instructions will allow you to avoid the typical mistakes made by beginners when flashing.
Why is it necessary to roll back the version of the software
Developers MIUI And the new HyperOS is constantly releasing updates to improve security and add new features, but in the pursuit of novelty, engineers sometimes make mistakes that only appear on certain models or in specific regions. The user may experience processor overheating for simple tasks or module inoperability NFC pay.
Often the problem lies in the optimization of code for new versions of Android. Older models of smartphones do not physically have time to handle the increased requirements of the system, which leads to lags and friezes. In such situations, returning to the version that was installed out of the box or was the previous stable build becomes the only way to comfortably use the gadget.
⚠️ Warning: Before you start any manipulation of system files, make sure that the battery level is at least 60%. interruption of the data writing process due to battery discharge can irreversibly damage memory partitions.
Another reason could be that banking applications are incompatible with new security patches. If Google Pay or bank keys have stopped working after the upgrade, and cleaning the cache doesn't help, then downgrade is the most radical but effective way to solve the problem. It's important to understand that you're changing the software environment of the device, and it's always a risk.
Preparation of the device and search for firmware
The first and most critical step is finding the right file to install. The firmware for Xiaomi is divided into Recovery (to upgrade on top of the current system) and Fastboot (total reflash with cleaning). To roll back, we usually need a Recovery version in.zip format if we don’t want to completely erase data, although a full reset is often recommended for system cleanliness.
Files should only be downloaded from trusted resources, such as the official portal miui.com or authoritative forums like 4PDA. Using modified assemblies from unknown authors carries the risk of malicious code introduction. Be sure to check the digital signature and checksum of the file, if such an opportunity is provided by the source.
It is important to follow the regional compatibility rule: you can not install Global firmware on a device with a Chinese version (China) without unlocking the bootloader and completely clearing the data. Moreover, when downgrading, the Android version in the installed file must be the same or lower than the current one, but not higher.
☑️ Pre-firmware check
Once you download the file, put it in the root folder of your smartphone's internal memory. Don't hide it in deep directories, because the standard updater might not see it. It's best to leave the file name original, without Cyrillic and special characters, to avoid errors in the system's reading path to the file.
Recovery Method through Recovery Menu
This is the safest way to do this, and it's the most suitable way for most users, because it doesn't require a connection to a computer. The built-in updater allows you to select a local file to update, but there's an important caveat: the default system doesn't allow you to roll back to an older version, considering it an action that is potentially dangerous for the stability.
To activate the hidden file selection function, you need to perform a series of actions in the About Phone menu. Click the MIUI version number several times until "Additional Features Available" appears. Then the update menu will allow you to select the file manually, which is a key point without which further action is impossible.
Once you select the firmware file, the system will check compatibility. If the Android version matches or the new version is lower than the current one, the installation process will begin. The screen will go out, the Mi logo and progress bar will appear, at which point it is strictly forbidden to interrupt the process, even if it has been suspended for a few minutes - the system partitions are recorded.
What to do if you say "file cannot be installed"?
Once installed, the phone will automatically restart. It can take 5 to 10 minutes to launch as the system optimizes applications. Don't panic if the device is stuck on the logo for a long time, which is normal when changing versions of system software.
Using Fastboot Mode for Clean Installation
If the standard method does not work or you need to change the region (for example, from China to Global), Fastboot mode is used. This method involves the complete removal of all data from the device, so backup is mandatory. To work, you will need a computer with Windows OS and installed drivers ADB and Fastboot.
Download the firmware archive in.tgz format (tgz, not zip) and unpack it to the root of the C disk so that the path is short, such as: C:\rom_global. Long paths with Cyrillic can cause errors in installation scripts. In the folder with unpacked firmware, find the file flash_all.bat (for Windows) or the corresponding script for your OS.
Put your smartphone into Fastboot mode, holding both the power and volume buttons when the device is turned off. Connect your phone to your computer with the original cable. Launch the firmware script at the command line. The process will take several minutes, during which time the phone will be rebooted several times.
| Parameter | Recovery method | Fastboot method |
|---|---|---|
| Data retention | Yeah (usually) | No (full reset) |
| I need a PC. | No. | Yes. |
| Change of region | Impossible. | Maybe. |
| Difficulty | Low. | Tall. |
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Use it. USB-port 2.0 It's on the computer motherboard, not the front panel of the case. 3.0/3.1 Sometimes cause problems with connection stability when firmware old Xiaomi models.
Common mistakes and ways to solve them
One of the most common problems is the Can't verify update, which occurs if the firmware file is corrupted when downloaded or doesn't match the device model. Check the model in settings (Settings → About phone) and compare the code name (e.g., gucci, land, cepheus) with the firmware file name.
Another common situation is that the phone goes into an endless bootloop. If this happened after a failed firmware attempt, try entering Recovery mode (clamping the power and volume up) and doing Wipe Data. If that doesn't work, you'll need to flash through Fastboot to clean all partitions.
⚠️ Note: When using the Fastboot method with an argument --unlock-bootloader or, if the region changes with CN Global may require a wait-out from 168 hours (7 Days) after the Mi Account is linked. Plan your actions in advance.
Users also often forget about encryption, and when you roll back very old versions of Android (like Android 11 to Android 9), data can become unreadable due to differences in encryption algorithms, so the backup rule remains the gold standard of security.
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The success of a firmware rollback is 90% dependent on the correctness of the selected file and the exact following of the instructions for a particular model, not on general tips.