Update Xiaomi Redmi 9C to the latest version of MIUI: 3 proven ways

Why Update Your Firmware to Redmi 9C and What It Means

Xiaomi Redmi 9C (codenamed angelica) was released in 2020, but is still used due to the balance of price and performance. However, over time, even budget devices begin to slow down, and here comes the help of firmware updates, not only fix bugs, but also add new features, optimize power consumption and close security vulnerabilities.

The latest stable version of MIUI for Redmi 9C is MIUI 14 based on Android 12 (for global firmware).

• 🔄 Improved multitasking (up to 20% faster switching between applications).
• 🔋 Optimization of battery consumption (10-15% longer without recharging).
• 🛡️ Google Security Patches (Actual as of June 2026).
• 🎨 New themes of design and animation in MIUI 14.

Before updating, it is important to consider two critical points:

1. On Redmi 9C with 2/32 GB of memory, the update can “eat” up to 3-4 GB of free space.
2. When switching from MIUI 12 to MIUI 14, make sure to back up - some settings are reset.

Check the current version of MIUI and available updates

Before you start the update, make sure it’s available for your model at all. There are three types of firmware on the Redmi 9C:

• 🌍 Global – for the international market, supported by Google Services.
• 🇨🇳 China – no Google services, but with early access to new features.
• 🇪🇺 European (EEA) — global version, taking into account GDPR.

To check the current version:

1. Open the settings → About the phone → version of MIUI.
2. Remember or write down the build number (e.g., V14.0.2.0.SCFMIXM).
3. Check the available updates in Settings → System → Update MIUI.

Attention, if your version MIUI begin V12. or V13., If you don't have a customization option, you're excluded from official support, and you'll have to manually install the firmware. №2 or №3).

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If the update menu appears with the error “Can’t connect to the server”, try changing the DNS to 8.8.8.8 or using a VPN (for example, ProtonVPN).

Method 1: Update via Settings (the safest method)

This is the standard method recommended by Xiaomi for most users, it does not require a computer and saves all the data when executed correctly.

Charge your phone at least 50% | Connect to stable Wi-Fi |Free 3-4 GB of storage |Disable VPN/proxy (if you use) |Close all background applications

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1. Go to Settings → System → Update MIUI.
2. Click on the three dots in the top right corner and select Update Package (if the update has already been downloaded) or Check Updates.
3. If a new version is available, click Download (file weight is ~2 GB).
4. After downloading, select Install Now and confirm the reboot.

It takes 10-15 minutes. The phone will reboot 1-2 times, which is normal. Don't interrupt the update, even if the screen goes out for a long time (maximum wait time is 20 minutes).

⚠️ Warning: If the phone stayed on the Redmi logo for more than 30 minutes after the update, then there was an error. + Volume up for 10 seconds for forced reboot. If it doesn't work, read the section on Recovery installation.

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Automatic updates via Wi-Fi are the only method that does not require unlocking the bootloader and does not reset user data.

Method 2: Install firmware through Recovery (if the automatic update doesn’t work)

If your phone doesn't find updates through the settings, but you're sure there's a new version for your model, you can manually install it through Recovery mode.

• 📥 Installation of downloaded firmware (for example, from the Xiaomi Firmware site).
• 🔄 Recovery after Automatic Update Failure.
• 🌐 Transition from Chinese firmware to global (and vice versa).

Step-by-step:

1. Download the desired firmware (file with.zip extension) to your computer or directly to your phone.
2. Rename the file to update.zip (required!) and move it to the root folder of internal memory.
3. Turn off the phone, then press Power + Volume up for 5-7 seconds to enter Recovery.
4. Select the language, then tap Install update.zip to System.
5. Confirm the installation and wait for the completion (it will take 5-10 minutes).

Important: In Recovery on Redmi 9C, the touchscreen works, but if it doesn’t respond, use volume buttons for navigation and power for confirmation.

Method 3: Fastboot Firmware (for power users)

This method requires a computer and an unlocked bootloader. It is suitable if:

• 🔓 Phone "brickled" (not turned on or stuck on the logo).
• 🔄 We need to downgrade the version. MIUI (downgrade).
• 🛠️ Complete reflashing is required with the removal of all data.

Warning: Fastboot firmware erases all data on the phone, including photos and apps, and requires unlocking the bootloader, which resets the device to factory settings.

Tools required:

• 🖥️ Windows computer 10/11 (or Linux/macOS s ADB Tools).
• 🔌 Cable USB (Preferably original from Xiaomi).
• 📦 Firmware in.tgz format (download from Xiaomi Firmware Updater).
• 🛠️ Mi Flash Tool (official program from Xiaomi).

Instructions:

1. Unpack firmware (.tgz) in a folder without Cyrillic characters (for example, C:\redmi9c_fastboot).
2. Install the Mi Flash Tool and Xiaomi USB drivers.
3. Turn off the phone, then press Power + Volume down to enter the Fastboot (a hare in a hat-hushanka will appear).
4. Connect your phone to your PC and start the Mi Flash Tool.
5. In the program, click Select, specify the firmware folder, then select Clean all (full clean) or Save user data (save data, but does not always work).
6. Press Flash and wait until it is completed (10-15 minutes).

⚠️ If the Mi Flash Tool is an error 0x80070002 or 0xc0000005, So the drivers are not installed correctly. Try reinstalling them manually through Device Manager by selecting the Android Bootloader Interface driver.

Frequent update errors and how to fix them

Even if you follow the instructions, Redmi 9C users are having trouble, and let's look at the most common ones.

If none of the methods worked and the phone didn't turn on, the EFS (IMEI) section might have been damaged, and you'd need specialized software like QFil or EDL Tool, but that's a topic for a separate article.

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Before installing custom firmware (such as LineageOS), be sure to back up the persist partition via TWRP. its loss can lead to a broken camera or mobile network.

How to save data before updating

Even if the update is "over the air", there is always a risk of data loss. On the Redmi 9C with 32 GB of memory, backup is especially important.

• 📸 Photos and videos: copy to PC or upload to Google Photos (up to 15GB free).
• 📱 Contact and SMS: Export through Contacts → Management → Export (saves the file.vcf).
• 🎮 Save Games: Use built-in sync via Google Play Games or Mi Account.
• 🔑 Passwords and Settings: Enable Synchronization in Settings → Accounts. → Mi Account.

For a full backup system:

1. Install TWRP Recovery (requires an unlocked bootloader).
2. Download to TWRP and select Backup.
3. Check the Boot, System, Data and EFS sections.
4. Save the backup to a memory card or PC.

⚠️ Note: Don’t rely on the backup via Mi Cloud, it doesn’t save some system settings and application data. Use the combination of Google Drive for reliability. + backup.

FAQ: Answers to Frequent Questions