Owners of low-end devices like the Redmi 6A often face a situation where after updating the system, the smartphone starts to work unstable, the battery runs out faster, the interface slows down, and some applications stop functioning correctly, in which case the only right solution is to return to the previous, more stable version of the software.
The firmware rollback procedure requires careful and accurate follow-up, as incorrect actions can lead to data loss or buildup of the device. However, if you prepare all the necessary tools and files in advance, this process will take no more than 20-30 minutes.
In this article, we will discuss in detail all available methods for returning an old MIUI build on your device, we will look at ways with and without data loss, and also discuss the nuances of working with the bootloader and the Mi Flash Tool utility. Read carefully to choose the best option for your case.
Preparation for rollback procedure
Before you start any manipulation of the system partition, you need to conduct thorough preparation. Ignoring this stage can lead to unpredictable consequences, including complete failure of the gadget. Backup is the first thing you should do, saving contacts, photos and important documents to an external medium or to the cloud.
You will need to charge the battery at least until 60-70%. The flashing process is energy-intensive, and suddenly turning off your smartphone at a critical moment can damage the boot sector. USB-cable, preferably original, which comes with the device.
💡
Use it. USB-port located directly on the computer motherboard (back of the system unit), rather than the front panel or USB-hub to avoid connection breaks.
To work, you will need a computer running Windows, since most utilities for working with Xiaomi are optimized for this OS. It is also worth downloading the ADB and Fastboot drivers in advance so that the system correctly recognizes the smartphone in debugging mode.
- 📂 Make a full backup of all personal data on your PC or cloud service.
- 🔋 Charge your smartphone battery to at least 70% to avoid sudden shutdown.
- 💻 Install current drivers ADB Fastboot on your personal computer.
- 📥 Download the exact version of the firmware you plan to roll back to from a verified source.
Special attention is paid to the choice of firmware file. Redmi 6A (codename platina) has different regional versions: Global, China, Russia, Europe. rollback is possible only on the version with the same region as installed now, or through a complete flashing with data cleanup.
Verification of the bootloader version and device status
The key factor determining the rollback method is the status of the bootloader; on Xiaomi devices, it is locked by default, which limits the user’s ability to modify the system. If the bootloader is locked, your actions will be limited to official recovery methods.
To check your status, turn your smartphone into Fastboot mode. Turn the device off completely, then press down the volume button and power buttons at the same time, and the image of a hare repairing an android will appear on the screen and the words FASTBOOT. Connect the phone to your PC.
If you see a Locked sign, you have limited access to system partitions, so you can only roll back the firmware through the Recovery menu, subject to certain version conditions, or through the official Mi Flash tool in clean mode. Unlocked gives you complete freedom of action, including custom recovery installation.
⚠️ Warning: Unlocking the bootloader automatically erases all data from the device for security reasons.If you decide to unlock it for rollback, be prepared for a full reset.
bootloader status also affects the ability to install an older version of software on top of a newer one. MIUI's security policy often prohibits downgrade without fully clearing user data to prevent file structure conflicts.
Recovery Menu Recovery Method (without PC)
The easiest way to return a previous version of the system does not require a connection to the computer, but has strict limitations, and this method works if you want to roll back one version or if the firmware file is specifically signed for an update. You will need a firmware file in.zip format, which should lie at the root of internal memory or on the back of the file. SD-map.
Go to your smartphone settings and select About Phone. Click on MIUI to open the update menu. In the upper right corner, click three dots and select Select a firmware file. Find the downloaded archive and confirm the action.
☑️ Checking before firmware in Recovery
If it sets a rollback, the installation process will begin, but most often you will see an error message saying that the file version is newer than the current one or that the rollback is prohibited, in which case this method will not work, and you will have to use more complex methods to clean the data.
Alternative path through the standard Recovery:
- Turn off your smartphone completely.
- Press the "Loudness Up" and "Food" buttons before the Mi logo appears.
- In the Recovery menu (manage volume buttons, select power button) select Wipe Data.
- After reset, select Connect with MIAssistant and connect the phone to your PC.
Through the Mi PC Suite utility or web version, you can try to download a previously saved backup, but this method does not work stable on new versions of MIUI. Therefore, it is better to use the method with Fastboot for guaranteed results.
Full rollback via Fastboot and Mi Flash Tool
The most reliable way to roll back firmware on Redmi 6A is to use the Mi Flash Tool utility and the.tgz system image. This method requires an unlocked bootloader for full functionality, but in some cases allows you to reflash the device with a locked one if the correct mode is selected.
First, download the firmware archive for Fastboot (usually has a.tgz extension and a name like this). platina_global_images...). Unpack the archive in the root of the disk so that the path does not contain Cyrillic and is short, for example, C:\xiaomi_rom\.
Launch the Mi Flash Tool on behalf of the administrator. Press the Refresh button and connect your smartphone in Fastboot mode. If the drivers are installed correctly, the device with its serial number will appear in the list. Choose the path to the unpacked firmware folder.
| Firmware mode | Data retention | Requirements for Bootloader | Risk of error |
|---|---|---|---|
| clean all | Complete removal | Unlocking required | Low. |
| save user data | Conservation | Strict kickback ban | High (version error) |
| clean all and lock | Complete removal | Post-firmware locking | Medium (risk of bricks when changing region) |
At the bottom of the utility window, select Clean All mode.This mode completely clears the memory, which is necessary when changing the Android version or significantly rolling back MIUI. Press the Flash button and wait for the process to end, which will take 200 to 500 seconds.
💡
Using the “Clean All” mode in the Mi Flash Tool is the only guaranteed way to roll back to a much older firmware version without partition compatibility errors.
Possible errors and methods of their elimination
There are various bugs that can be detected in the firmware process, and the most common is Error: Miss matching image and device, which means you're trying to flash the firmware that's designed for another device or region.
Another common problem is hanging out at the Sahara or Firehose stage, which often indicates a bad one. USB-cable, a faulty port, or the lack of the right Qualcomm drivers on the system.Try replacing the cable or reconnecting the device to another port.
⚠️ Warning: If there is a bug in the firmware process, do not pull the cable out at once. Try pressing the Stop button in the program and restarting the phone to Fastboot mode again.
What to do if your phone is in an endless reboot?
The Anti-rollback error indicates that the device is activated protection against downgrading the bootloader version or the base Android. In the case of Redmi 6A, this is rare, but if you switched to the Android 9 version, it may be impossible to roll back to Android 8 by software methods without opening the case and using a programmer.
Set up the system after a successful rollback
Once the procedure is completed successfully, the smartphone will restart. The first launch can take up to 10 minutes, as the system optimizes applications and creates new configuration files. Don't panic if the screen is lit for a long time by the Mi or Android logo.
Once downloaded, you'll need to reconfigure your language, Wi-Fi, and enter your Mi Account details, and since the clean all method has deleted all data, now is the time to restore backup from the cloud or memory card.
It is recommended to check for system updates right away. The version you rolled back may contain critical security vulnerabilities. If the problem that caused you to roll back is not solved, consider installing custom firmware, as stock MIUI on older models may not be optimized.
- 📡 Check the operation of communication modules (calls, mobile Internet) immediately after setting up.
- 🔒 Make sure that the device has an up-to-date date and time for the security certificates to work properly.
- 🧹 Remove unused system applications if the new firmware version brings extra software.
💡
After the firmware rolls back, the battery calibration may be lost. To properly operate the charge indicator, discharge the phone to 0% and charge to 100% when turned off.