Xiaomi Redmi Note 4 has become a real bestseller thanks to the combination of performance and price, but over time, new versions of the MIUI shell can work unstable on this device. Users often face a situation when after a planned update the system begins to consume more power, interface lags appear or communication disappears. In such cases, the only sure solution is to return to a more stable, previous version of the software, which requires careful attention.
The rollback procedure is not a trivial task for a beginner, since Xiaomi’s security policy prohibits installing an older version of the firmware on top of the new standard methods. You will have to go through several stages of preparation, including unlocking the bootloader and using special tools for flashing. Ignoring the technical requirements at any of the stages can lead to a software failure, so carefully study the theoretical part before starting practical actions.
Why is it necessary to roll back firmware
The main reason Redmi Note 4 owners are looking for ways to downgrade the Android or MIUI version is to optimize the device for specific hardware.New shells often contain heavy graphics elements and background processes that overload the Snapdragon 625 or Helio X20 processor, causing overheating and trottling.
In addition, in fresh builds, there may be software errors (bugs) that developers did not have time to fix, this can be expressed in the improper operation of communication modules, Bluetooth malfunctions or rapid battery discharge in standby mode.
⚠️ Attention: The rollback procedure involves the complete removal of all user data. Backup contacts, photos and documents in advance on external media or in the cloud storage.
Also, it’s worth considering that some banking applications or enterprise services may not work properly on custom or modified builds, which are often installed by users in an attempt to improve the system.
Determining the current version and selecting the target firmware
The first step in the preparation process is to accurately determine the current version of the software and find the right file to roll back. You need to know not only the version of MIUI, but also the type of bootloader, because the installation method depends on it. For global versions (Global) and Chinese (China), the methods may differ.
You can find information about the current build in the settings menu. Go to Settings → Phone and look at the version number. If the number ends with the letter C, it means that the bootloader is unlocked, which makes it easier. If it's an N or an L, the bootloader is locked.
Use official archives or proven aggregator resources to select the right firmware. It is important to download the Recovery version (with the.zip extension) rather than Fastboot (with the.tgz extension) if you plan to use the standard menu update method.
| Parameter | Where to find out. | Importance |
|---|---|---|
| MIUI version | Settings → About the phone | Critical for compatibility |
| Type of device | Settings → On the telephone (model) | Identifies the firmware file |
| Loader status | Settings → About the phone (tap according to version) | Determines the installation method |
| MIUI 10/11/12 | Digital version code | Tall. |
| Redmi Note 4 (mido) | Model in characteristics | Tall. |
| Locked / Unlocked | Downstairs with tapas. | Critical |
Preparing a smartphone and computer for flashing
Good equipment preparation is key to a successful completion of the procedure. You'll need a Windows computer that's in good working order. USB-The cable and the smartphone itself with a battery charge of at least 60%. Using an unstable cable can interrupt the recording process, which will lead to a "brick" of the device.
You need to install current drivers for Xiaomi and ADB-Drivers: Without them, the system will not be able to correctly identify the device in Fastboot or Recovery mode, it is also recommended to free up space on the internal drive of the smartphone, although if you completely reset the data will still be deleted.
☑️ Checklist of preparations
It is important to disable any antivirus programs and firewalls during the procedure, as they can block the MiFlash utility or the file transfer process. Also make sure that the path on the computer disk where the firmware files are unpacked does not contain Cyrillic characters or spaces.
Recovery Menu (Standard) Method of Recovery Menu
This method is only suitable if the difference between the firmware versions is small, or if a special feature in the developer menu was previously activated on the device. First, rename the downloaded firmware file to update.zip and place it in the root folder of internal memory.
Then activate the hidden option. Go to Settings → About Phone and click on the MIUI version several times until the message "Additional Features Activated" appears. Then click on three dots in the corner of the screen and select "Select firmware file" by specifying your update.zip.
Once the file is selected, the phone will prompt you to restart for installation. If the system gives an error "Can't verify update" or "Backet is corrupted", this means that the version is too old to install through Recovery, and you will need to use the Fastboot method with the unlocked bootloader.
⚠️ Warning: If you see a message that you can't install, don't try to flash the device repeatedly. This will not bypass the protection, but only increase the risk of file system failure.
Recoil via Fastboot and MiFlash (for advanced)
The most reliable way to roll back the system on the Redmi Note 4 is to use the Fastboot mode and the MiFlash Tool utility. This method requires an unlocked bootloader, which is officially requested through the MIUI website. Once you get permission and unlock, you can go to the firmware.
Upload your phone to Fastboot mode, pressing both the power and volume buttons at the same time. Connect the device to your PC and start MiFlash. In the program, choose the path to the unpacked firmware folder (not to the archive, but to the file folder).
At the bottom of the utility window, select clean all mode to avoid file conflicts between old and new systems. Pressing the Flash button will start a process that will take 200 to 600 seconds.
fastboot flash recovery recovery.img
fastboot rebootThe above commands may be required to manually flash the Recovery partition if the automatic installation fails, but for most users, the MiFlash interface is sufficient. Once completed, the phone will automatically reboot to the clean system.
Solving common mistakes and problems
During the rollback process, users often encounter a “Missmatching image and device” error, which means that you are trying to install firmware from another model (for example, from the Redmi Note 4X to the regular Note 4).
Another common problem is hanging on the MI logo after installation, in which case you need to reset via Recovery (Wipe Data). If the phone is not in Recovery mode, try clamping the power and volume buttons when the device is off.
If your computer doesn’t see your phone in Fastboot mode, check Windows Device Manager.The device can appear as “Unknown Device” or "QUSB_BULK". In this case, you need to manually install drivers Qualcomm or Xiaomi.
⚠️ Warning: Re-locking the bootloader after installing global firmware on a Chinese device (or vice versa) will result in the inability to boot the system (Hard Brick.