How to roll back Android update on Xiaomi Redmi Note 9

Xiaomi smartphone users often face a situation where the next MIUI update brings not the desired improvements, but new bugs, battery discharge or communication problems. Owners of the popular Redmi Note 9 model are no exception, and the question of returning to a stable version of the software becomes urgent for them. The process of rollback, or downgrade, requires care, since improper actions can lead to data loss or software errors.

There are several proven ways to return the previous version of the operating system, ranging from standard recovery tools to more sophisticated methods through Fastboot mode. The choice of a particular method depends on the current health of the smartphone and the availability of Root rights. In this article, we will discuss in detail the safe algorithms that will help you restore the comfortable operation of the device without the need to contact the service center.

Before you start taking action, it is critical to understand the risks: Downgrading the firmware version on Xiaomi is officially prohibited by the Anti-rollback protection system, and trying to install an too old version can lead to the “bricking” of the device. Therefore, all the methods described below involve installing an official firmware that is newer or equal to the minimum version of the bootloader, but older than the current one installed.

Device preparation and data backup

Any manipulation of system files carries the risk of losing personal information. Before starting the rollback procedure, you need to create a full backup of all important data, this applies to contacts, photos, correspondence in messengers and documents. Even if the process is successful, flashing often leads to a complete cleanup of the internal memory of the device.

Built-in tools can be used for backup MIUI The most reliable option is to use the Google cloud for contacts and calendar, as well as Google Photos for media files. SD-The card, if supported by your configuration.

Be sure to charge your smartphone battery to a minimum of 60-70%. Interrupting the firmware process due to battery discharge can disrupt the integrity of system partitions. Also make sure you use an original or quality certified USB cable, as cheap counterparts often do not provide stable data transfer.

⚠️ Note: The rollback procedure will in most cases result in a complete reset of the smartphone settings to the factory. Make sure you copy all passwords, access keys and important files to an external medium.

Check the current version and firmware compatibility

The first step in the downgrade process is to pinpoint the current version of MIUI and find the right file to install. You can't just take any firmware from the Internet; it should be designed specifically for your model and region. There are various modifications for the Redmi Note 9 (Global, Russia, Europe, China), and flashing it in an incompatible way can cause conflicts of communication modules.

To find out the exact version, go to Settings → About Phone. Pay attention to the build number, for example, MIUI 12.5.3. You will need to find and download the version that precedes the current one, but does not violate the Anti-rollback policy. Usually, a rollback one major version back (for example, from MIUI 13 to MIUI 12) is considered safe, if the bootloader allows it.

Upload firmware only from trusted sources, such as the official Xiaomi website or authoritative aggregators like XiaomiFirmwareUpdater. The file should have a.zip extension for the method via Recovery or.tgz for the method through Fastboot. Make sure the downloaded file fully matches the code name of your device (for the Redmi Note 9 global version, it is usually merlin).

Recovery Method through the Recovery Menu

The easiest and safest way for anyone to use is to use the built-in recovery mode, but there is an important limitation to this method: the standard update menu will not allow you to install a version of the software older than the one that is now, unless you use a special trick, the system will give an error: "Can't verify update" or "Current version is newer than the selected one."

To get around this limitation, you need to rename the firmware file. The downloaded.zip archive needs to be renamed to update.zip (if it's called otherwise) and placed at the root of internal memory. Then you need to click on the MIUI version icon three times in the update menu to activate the hidden menu. In the window that appears, select three dots in the upper right corner and click "Select firmware file" indicating your renamed archive.

If the system still blocks the installation, it means that the Anti-rollback protection or the version is too old worked, in which case the method through Recovery will not work without the unlocked bootloader and using third-party tools. If the installation has begun, wait for the process to end, which can take from 5 to 15 minutes.

• 📱 Download the correct firmware file.zip for your model.
• 💾 Rename the file to update.zip and move it to the root of the memory.
• ⚙️ Activate file selection mode through triple tap on logo MIUI.
• 🔄 Run the update and wait for the device to restart.

Using Fastboot and Mi Flash Tool for Downgrade

If standard methods don't work, the only working option is to use Fastboot mode and the Mi Flash Tool on your computer, a more complex method that gives you complete control over the process, and it allows you to force an earlier version of the firmware to be installed without checking, but requires an unlocked bootloader.

To get started, you need to install ADB and Fastboot drivers on your computer, and download and unpack the Mi Flash Tool itself. The.tgz firmware also needs to be unpacked into the root folder of the disk (for example, C:\xiaomi\merlin) so that the path to the files does not contain Cyrillic and is short. Connect the switched-off smartphone to your PC by pressing the volume button to get into Fastboot mode (image of a rabbit repairing an android).

In the Mi Flash Tool, press the "Refresh" button to let your computer discover the device. In the path field, select the folder with the unpacked firmware. At the bottom of the window, select Clean All mode, as rolling back always requires formatting the data. Pressing the "Flash" button will start a process that will take several minutes. Do not turn off the cable until the message of successful completion appears.

⚠️ Note: Using Clear All and Lock mode when installing firmware from another region (e.g. Chinese instead of Global) can permanently lock the device.

💡

If your computer doesn’t see your phone in Fastboot mode, try replacing it. USB-cable or connect to another USB-port, preferably directly to the motherboard, and not through USB-hub.

Solving Common Errors When Systems Recoil

Downgrade users often encounter various errors that can stop the process. One of the most common is the status 7 error when installed via Recovery. It indicates that the updater-script file inside the archive contains a version check that does not allow you to install the old software.

Another common problem is hanging on the MI logo after installation, which can be due to conflict between the old system’s data and the new (or in this case, returned old) system files, in which case you need to perform a full reset (Wipe Data) via Recovery. To do this, turn off the phone and press the Volume Up + Power button combination, then select Wipe Data.

You can also have Mi Flash delivering a Flash All Lock or something like that, which indicates that the bootloader is locked and you're trying to perform actions that require administrator rights, so you can't roll back the version without unlocking the bootloader through official tools, and you'll have to wait for official permission from the developers or look for workarounds that might not be secure.

• ❌ Error "Zip file is corrupt" - firmware file damaged during download, download again.
• ❌ “Anti-rollback check failed” error – attempt to roll back on the banned version, risk of bricks.
• ❌ The phone goes into an endless reboot – you need to reset via Recovery (Wipe Data).

💡

Most firmware rollback errors are associated with trying to bypass anti-rollback protection or data conflict. Complete memory clearing before installing the old version greatly improves the chances of success.

Frequently Asked Questions (FAQ)