Many users are faced with the situation when the next OTA-The system starts to run unstable, the battery runs out quickly or the usual functions disappear. The desire to return everything as it was leads to the idea of a downgrade, that is, a return to the previous version. MIUI. However, the process is not as simple as installing an update and requires a deep understanding of Xiaomi’s security architecture.
Unlike many other manufacturers, the Chinese giant has tight restrictions on the ability to downgrade software. Anti-rollback protection is a mechanism that will physically prevent you from installing old firmware if the version counter has already been incremented. Ignoring these rules can lead to the device becoming a brick and require complex recovery through EDL Mode.
Before you start taking action, you need to take a sober look at the need for this step. Often, problems are solved by completely resetting your settings or waiting for a patch to fix the bugs. But if you firmly decided that the previous build worked better and are willing to take responsibility for the possible risks, then this article will be your navigator in the world of system administration of Redmi and Poco smartphones.
Risk analysis and anti-rollback testing
The first and most critical step is to check the current bootloader version and rollback protection level. Anti-rollback index is a digital value that increases with every major security update or Android version change. If you try to install firmware with a smaller index than recorded in the device's memory, the process will be interrupted, and in the worst case, the smartphone will go into a deep reboot cycle.
You can find out the current status by connecting the phone to your computer in Fastboot mode. To do this, press the volume button and connect the volume button. USB-It'll be on the screen, it'll be written. FASTBOOT, And you can see in your computer logs or through a utility, you can see the line anti: with a number. This number is your ceiling. You can't go below it.
⚠️ Warning: Attempting to firmware an image with a lower Anti-rollback index than installed in the device can lead to irreversible locking of the bootloader (Hard Brick), the recovery of which is possible only in an authorized service center with paid access to Xiaomi servers.
Global firmware versions (Global) often have different partition structure from Chinese (China) or Indian (India), and trying to cross regions when the version rolls back is almost guaranteed to lead to errors in the communication modules and camera.
Tools and environment preparation required
To successfully perform the downgrade procedure, you will need to build a certain set of software. Without specialized tools, standard recovery menu methods will not be possible, since the official menu does not support installing old versions on top of new ones.
First of all, take care of the drivers.The computer must correctly recognize the device in ADB and Fastboot modes. Often standard Windows drivers can not cope with this, so it is recommended to install the universal package Xiaomi USB Drivers or Google USB Driver through the SDK Manager.
- 📱 Cable USB Type-C original quality or well-shielded, capable of transmitting data, not just charging.
- 💻 PC or laptop with Windows operating system (on macOS and Linux, working with Fastboot may require additional settings of access rights).
- 🔓 Unlocked Bootloader is a prerequisite for most rollback methods, except for rare exceptions.
- 💾 Archive with the desired firmware version in.zip (Recovery) or.tgz (Fastboot) format).
Pay special attention to battery charge. The device should be charged at least 60-70%. During flashing or rollback, the system can consume a lot of power, and suddenly turning off at a critical moment of writing flash memory partitions is fatal.
☑️ Preparation for rollback
Recovery method (without PC)
There is an official but limited rollback method that only works in certain scenarios, available if you are on a stable version and want to upgrade to a previous stable version, or if you are on a beta version, using a built-in update menu.
You need to manually download the firmware archive (Recovery) ROM, The.zip extension of the version you want to return to must be placed in the root of the internal memory or folder. downloaded_rom. Next, in the Software version selection menu, click on three dots in the corner of the screen and select "Select firmware file».
If the system allows you to start installing, you're in luck, but most often you'll see a message saying, "It's impossible to upgrade" or "It can't be downgraded." This is when the protection works. In such cases, the Recovery method is useless, and you'll have to use more sophisticated methods through Fastboot that require an unlocked bootloader.
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If the system says that the file is corrupted or cannot be installed, try renaming the firmware file to a simple name without spaces, for example. update.zip, And move it to the root of the inner memory, not to the root of the inner memory. SD-map.
Downgrade via Fastboot with unlocked bootloader
This is the most reliable and common method that gives you full control over the partitions of the device, the main condition is that your Bootloader must be unlocked. If it is blocked, the procedure is impossible without official unlocking, which requires a wait of 7 to 30 days and an account binding.
The process begins with putting your smartphone into Fastboot mode (clicking down + power). Connect your device to your PC. Run command prompt or PowerShell in the folder with fastboot.exe. Before you start, it is critical to clear the data, as switching between Android versions or even larger versions of MIUI often changes the structure of data partitions.
fastboot erase userdata
fastboot erase cacheOnce cleaned, you can start the firmware. Use the fastboot flash command for each partition separately if you have unpacked images, or use a script. flash_all.bat (Windows), pre-deleting the data cleanup command from it if you've already cleaned it manually to avoid double erasure. --disable-verity and --disable-verification when you are firmware, if you change the firmware type (for example, from Global to China).
| Fastboot Team | Description of action | Risk of error |
|---|---|---|
| fastboot flash boot boot.img | Records the kernel image of the system | Medium (the OS may not be loaded) |
| fastboot flash recovery recovery.img | Set up a recovery section | Low. |
| fastboot flash system system.img | It is the main system section. | High (critical for launch) |
| fastboot reboot | Reboots the device | Low. |
⚠️ WARNING: When using the Fastboot, always make sure you are flashing images that are designed specifically for your model. The firmware from Xiaomi Mi 11, installed on the Xiaomi Mi 11 Pro, will lead to hardware damage to components.
Mi Account and blocking issues
One of the most frustrating issues with rolling back the update is linking to your Mi Account, and if you've been able to search for a device, you'll need to reset and install the old firmware, and you'll need to enter a password from an account that was synced earlier, which is anti-theft protection.
Moreover, in some regions (especially China and India), there are server checks, and if you try to roll back to a version that is no longer signed by the activation servers, the phone may get stuck in the initialization phase, which requires waiting or using dedicated service accounts.
To minimize the risks, be sure to log out of all Google and Mi accounts before starting all work. Go to Settings → Mi Account → Log out and make sure the Find Device feature is disabled. Also delete all lock screens (passwords, fingerprints, FaceID) so that the system does not request them when you first boot.
What to do if your phone is in an endless reboot?
Frequent mistakes and ways to solve them
Downgrade users often encounter common errors, one of the most common being FAILED (remote: 'Flashing is not allowed in Locked State'), which means that the bootloader is locked, and two solutions are to either unlock it officially or use paid-for service methods (MiFlash Pro), which do not work on all models.
Another mistake — FAILED (status read failed) or a communication break during the firmware process. USB-cable, port USB 3.0 (which sometimes conflicts with old fastboot drivers) or port power saving. USB 2.0 on the back of the PC and the original cable.
- 🚫 The error “Downgrade not allowed” in Recovery – means that the Anti-rollback index does not allow rollback, you need a Fastboot with unlocked BL.
- 🔒 Requesting Mi Account password after reset - forgot to log out of the account before the procedure, you will need to restore access through the site.
- 📉 Black screen after firmware - may have been stitched incorrect version of Recovery or damaged partition boot, requires flashing the full image.
Also, don’t forget about software conflicts. Old firmware can not work properly with new modem drivers if they are updated at the bootloader level. In such cases, only complete flashing with cleaning of all partitions by fastboot erase persist command (with caution, since there may be calibration data).
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A successful rollback is only possible if three conditions are met: an unlocked bootloader, a compatible Anti-rollback index, and a complete clearing of user data before installation.