The situation when a new version of the operating system starts to work unstable, familiar to many owners of Xiaomi. the device can discharge faster, heat up or give errors in the work of applications. Owners of the popular model Redmi Note 8 Pro often face the need to return to the previous, more stable build MIUI. This process is called downgrade or rollback firmware.
The procedure is not trivial and requires careful attention to detail: Xiaomi officially blocks the ability to install an older version of the software on top of the new one through the standard update menu, this is done for security reasons to prevent system vulnerabilities. However, there are proven ways to circumvent this limitation using Fastboot mode and specialized software.
Before you take action, you need to understand the risks. Any interference in the system partition has the potential to turn the device into a brick. If you are not sure about yourself or are afraid of losing important data, you should contact an authorized service center. But if you are determined to fix the situation yourself, follow the recommendations below.
Preparation for rollback procedure
The success of the operation depends on 90% of the quality of preparation. The first step is to have a full backup of data. If you roll back the Android or MIUI version, all user files will be permanently deleted. Backup contacts, photos and documents to the cloud service or computer.
You will need quality. USB-The cable, preferably original, that came bundled with the device.Damaged cables can cause communication to break during firmware, which is critical for the Redmi Note 8 Pro. Also make sure that the battery charge is at least 60%. If the phone turns off during the recording process, it will be extremely difficult to restore it.
To work on your computer, you need to install Xiaomi drivers and the Mi Flash Tool utility. Without these components, your computer will not be able to properly interact with your phone in boot mode. Download the software only from official resources or trusted forums to avoid malware.
โ๏ธ Ready to roll back
Choosing the Right Version of the Firmware
The critical thing is to choose a file to recover. You can't just take any old firmware. There's a hard rule: the Android version in the roll-back firmware must match the current one or be higher, or, in the case of the Redmi Note 8 Pro, it often requires a full transition to an earlier version of MIUI based on the same version of Android that the device was originally running.
Usually, Android 9 or Android 10 versions are relevant to this model. If you upgrade to MIUI 12 based on Android 10 and want to return to MIUI 11, make sure that the basic version of the operating system allows this. Trying to flash the firmware with a lower level of security or the old version of Android on top of the new one is often blocked by the bootloader.
The firmware file should have the.tgz extension for the method via Fastboot. Archives with the.zip extension are designed to be installed via Recovery and for full-fledged rollback with data clearing are less suitable, as they may not start due to version verification. Look for files marked "Global" or "RU" corresponding to your region.
| Type of firmware | File extension | Method of installation | Data retention |
|---|---|---|---|
| Recovery | .zip | Through the phone menu | Maybe (but not when you roll back) |
| Fastboot | .tgz | Through PC and Mi Flash | No (full clean-up) |
| OTA | .zip | By air. | Yes. |
| Recovery (Local) | .zip | Selecting a file in the menu | Depends on the version. |
Where do I look for firmware?
The method of rollback through the Fastboot mode
The most reliable way to get the Redmi Note back. 8 Pro to the previous state. It requires a connection to a computer. First, unpack the downloaded.tgz firmware archive into the root of the C disk so that the path to the folder is short and contains no Cyrillic: C:\rom\.
Turn off your smartphone completely. Then press the power and volume buttons at the same time. Hold them until you see a picture of a hare in your headphones repairing an android. That's Fastboot mode. Connect your phone to your PC with a cable.
Run the Mi Flash Tool on behalf of the administrator. Press the Refresh button, your serial number device should appear in the list. If the number shows an error or the field is empty, check the drivers. In the lower right corner, select clean all mode. This is a mandatory rollback condition, since it completely erases the old system.
โ ๏ธ Warning: Never choose clean all and lock unless you are 100% sure of the origin of the firmware.Blocking the bootloader on a custom or regionally incompatible version will make it impossible to turn the phone on.
Once you select the mode, press the Flash button. It takes 300 to 600 seconds. The progress bar will fill up and commands will appear in the log. Don't touch the cable or turn off the computer. At the end, the phone will automatically restart. The first boot can last up to 10 minutes.
Trying to roll back through the Recovery menu
There is a less reliable method that sometimes works without a computer, but requires the conditions to be met: You need to rename the firmware file.zip to update.zip and put it in the root of internal memory. Then go to the Recovery menu: press the power and volume buttons on the phone that is turned off.
In the menu that appears, select the language (if available) and click on the installation icon. However, if you try to install an older version, the system will give an error "Can't verify update" or "Current version is newer." This is the standard Bootloader protection.
To get around this limitation without unlocking the bootloader, you can try the trick of changing the file name in the archive or using special scripts, but on newer versions of MIUI for the Redmi Note 8 Pro this often does not work.
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If the phone is gone into an endless bootloop, press the power button for 10-15 seconds to force a reboot, or use a combination of buttons to log in to Recovery and try to make Wipe Data.
Unlocking the bootloader: is it necessary?
Many users are wondering if Bootloader should be unlocked to roll back? Officially, yes, it gives you complete freedom. Unlocked bootloader allows you to install any version of firmware, including global ones on Chinese devices and vice versa, as well as roll back to older versions without restrictions.
The unlocking process requires a request via the Mi Unlock Tool app and a wait of 7 to 30 days, which is given to the user to think about the risks. Once unlocked, the software warranty is formally removed, although in practice service centers often turn a blind eye to this unless there is physical damage.
Without unlocking, you are limited to installing only Xiaomi-signed firmware, and the Anti-Rollback version checker will work at full capacity. If the device has a high rollback protection index, it may not be possible to return the old firmware without unlocking.
Possible mistakes and ways to solve them
There may be some firmware failures, and one of the common bugs in the Mi Flash Tool is "Flash All Error." It can mean that the firmware mode is not the right one or that it's corrupted. USB-Try replacing the port. USB On the computer, it is preferable to use the ports. USB 2.0 at the rear of the system unit.
If the phone is stuck on the MI logo after you have firmware, try re-entering Recovery mode and doing a Wipe Data reset. Sometimes the residual files conflict with the new (old) system. Also, the problem may be a broken firmware file โ download it again from another source.
In the worst case scenario, if the phone stops responding to buttons and the computer does not see the device even in the Device Manager (EDL mode), you will need a skilled repair with disassembly of the case and closing the contacts on the board.
โ ๏ธ Note: Anti-Rollback Protection (ARP) The Redmi Note 8 Pro can be activated at the processor level. ARP Below the current one, the device can be locked permanently. Always check the firmware index before installing it.
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The safest way is to use the original global firmware through Fastboot with complete data cleanup, this ensures the stability of the system.