How to update the Android version on the Xiaomi Redmi 9A

Smartphone Xiaomi Redmi 9A remains a popular budget device, but over time, the standard operating system ceases to receive new features and security patches. Many owners are wondering how to extend the life of the gadget and get a fresh interface. The process of updating MIUI or switching to a newer version of Android requires a careful approach, since budget models have their limitations on memory and processor.

Before you start taking action, you need to clearly understand the difference between a shell update and a complete system flashing. The standard way through the settings allows you to get the latest available packages from the manufacturer, which often includes bug fixes. However, if official support is terminated, users often look for ways to install custom firmware based on Android 11, 12 or even 13.

It’s important to note that any software tampering carries risks. The Redmi 9A is based on the MediaTek Helio G25 processor, which has specific limitations on unlocking the bootloader, which makes it different from the Snapdragon devices, which means that standard custom recavator installation methods may not work or require a complex procedure to bypass MIUI protection.

Preparation of the device and checking the current version

The first step is always to make a thorough diagnosis of the current system status, and you need to know which version of MIUI and Android is installed right now, so you can see if it makes sense to update officially or if the official patches are already exhausted, go to the settings menu and find the About Phone section.

If the numbers at the end of the line of the version have been stable for months, the manufacturer has probably completed a support cycle for your region, in which case trying to find an update through the standard menu will be useless, and you will have to consider manual methods.

⚠️ Warning: Before any manipulations, make sure that the battery is at least 60% charged. interruption of the system file writing process due to battery discharge may result in the inability to boot the system.

It is also critical to free up space in internal storage: Update files can weigh between 1.5 and 3 GB, and require additional free space to decompress and install them, delete unnecessary photos, videos, or transfer them to a memory card or cloud storage.

Official method of updating through settings

The safest and most recommended way is to use the built-in update mechanism, which ensures the integrity of system files and no driver conflicts. To start the process, go to Settings → About Phone → MIUI version.

Click on the MIUI logo or the Check Updates button, and the system will contact Xiaomi's server to report a new version. If the update is available, it will start downloading. In some cases, if the difference between your version and the current version is too large, the system may not suggest switching to the latest version immediately, but require an intermediate step.

Sometimes the server doesn't see the device or offers a version for another region, so you can try changing the region in the settings ("Advanced Settings → Region") to India or Global, and then repeat the check, which often helps you "break through" the lock and see the available package.

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If the update is not available, try switching the Internet type from Wi-Fi to the mobile network (or vice versa) before pressing the check button.

After downloading a file of several gigabytes, the phone will suggest rebooting. The installation process can take anywhere from 5 to 15 minutes. At this time, the Redmi logo and progress scale will be displayed on the screen. Don't touch the device at this point.

Manual installation of firmware through Recovery

If the automatic search didn't work, you can use the manual installation method, and you'll need a.zip firmware file specifically designed for Recovery ROM, which you can find on the official MIUI bootloader website or on the forums you've reviewed.

The downloaded file must be placed in the root of the phone's internal memory. Don't put it in folders, otherwise the recovery system won't be able to find it. The file should be simply named, preferably without the Cyrillic alphabet in its name, such as update.zip.

Next, go to Settings → About Phone → MIUI version. Click on the three dots in the top right corner of the screen and select “Select firmware file.” The system will find the archive and suggest starting the installation.

Use of Mi Flash Tool and Fastboot Mode

For more advanced users who have experienced update errors, there is a firmware method through the computer, which requires the use of the Mi Flash Tool utility and drivers. ADB/Fastboot. This method is often necessary if the phone is “bootted” (cyclical reboot).

You'll need to download the firmware in Fastboot format (extension.tgz), and the archive will need to be unpacked on your computer into a folder with a short path, for example, C:\rom\. The folder name should not contain spaces or Russian letters.

Put your smartphone in Fastboot mode. Turn off the phone completely, then press the volume button and hold it, connect the USB cable to the computer. The screen will show an image of a rabbit fixing an android, or the inscription FASTBOOT.

adb reboot bootloader

This command can be used if the phone turns on and works ADB. Once connected in Fastboot mode, launch the Mi Flash Tool, select the path to the unpacked folder and click the "Flash" button. Select the "Clean all" option if you want to clean the phone completely, or "Save user data" if the firmware allows (although a clean installation is recommended for the Redmi 9A to avoid errors).

⚠️ Note: When using Fastboot mode and selecting the option of complete cleanup, all your data will be irretrievably deleted. Create a full backup of contacts and important files in advance.

Custom firmware and unlocking the loader

When the official support for Redmi 9A ends, enthusiasts pay attention to custom firmware such as LineageOS, Pixel Experience or Xiaomi.eu. They allow you to get a clean Android without advertising and unnecessary software.

The main obstacle here is the bootloader. Xiaomi blocks it by default. Unlock requires you to apply through the Mi Unlock app on your PC and wait 7 to 30 days. Only after you get permission, the bootloader can unlock, which automatically resets all the data on the phone.

The process of installing a custom TWRP recavator on MediaTek devices often requires the use of specific tools such as the SP Flash Tool or MTK Client, as a standard Fastboot can be limited. This is a complex process that requires accurate selection of boot.img and recovery.img files for your version of Android.

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Unblocking the bootloader is the point of no return after which warranty service in authorized centers may become paid or impossible.

Possible mistakes and ways to solve them

Update to Redmi users 9A One of the common mistakes is, "Can't check the update." This is often due to problems on the server or an unstable Internet. DNS-server in Wi-Fi settings at 8.8.8.8.

Another common problem is a packet installation error, usually indicating a download file is damaged or space is not enough, check the integrity of the downloaded archive (the checksum must match the amount indicated on the site), and clear the Update app cache through the application settings.

If the phone is running slowly or discharges quickly after the upgrade, reset to factory settings. This will delete old configuration files that may have conflicted with the new version of the system.