How to return the standard theme to Xiaomi Redmi Note 9: roll back changes without data loss

Owners of Xiaomi Redmi Note 9 often face a problem: after installing a custom theme through MIUI Themes, the system begins to glittle, slow down or refuses to return to the factory design. In some cases, users do not even suspect that the changed theme interferes with the sensor, notifications or gestures. You can return the standard interface in several ways, from simple resetting in settings to manually deleting files via ADB.

In this article, we will analyze all the current methods of returning to the factory theme on the Redmi Note 9 (including the Note 9 Pro, Note 9S and Note 9T models), taking into account the features of different versions of MIUI (12 to 14). Particular attention will be paid to the hidden settings of the theme engine, which Xiaomi does not advertise, but allows you to reset the theme without completely resetting the phone.

Why you can’t return a standard theme through settings

The main reason is the conflict of the theme files with system components. MIUI stores custom themes in the /data/system/theme/ folder, and if you delete or update the firmware incorrectly, these files can get stuck in the system.

• 🔄 Reset the theme button in Settings → Topics not responding to press.
• 🎨 After the reboot, the theme returns to custom, despite the choice of the standard one.
• ⚙️ Theme menu does not have the option “By default” or “Standard” MIUI».
• 🚫 When you try to change the topic, an error appears.

The second common problem is the manufacturer's limitations. MIUI 13, Xiaomi blocks manual removal of themes through the file manager, and in some regional firmware (for example, for India or Europe), the theme reset option is hidden due to licensing agreements with theme designers. ADB or reset to factory settings.

⚠️ Note: If you have installed themes from third-party sources (not official) MIUI Theme Store, their files may contain malicious code. Before resetting the theme, check your phone for viruses using Google Play Protect or Malwarebytes.

Method 1: Reset theme through standard MIUI settings

The simplest method, which works on most devices with MIUI 12-14, is suitable if the reset button is active, but the theme does not apply.

1. Open Settings → Themes.
2. Slip on the profile icon (or “My Topics”) in the upper right corner.
3. Select “Reset theme” or “Return the standard one”.
4. Confirm the action and restart the phone.

If there is no option:

• 🔍 Check if it is hidden under a long tap in a free space in the themes menu (sometimes it works on the menu). MIUI 13).
• 📱 Try changing your phone region to India (in Settings) → Additionally. → The region, as in this version MIUI reset option is often available.

On some firmware (e.g. MIUI 14 for Redmi Note 9 Pro), a theme reset may require a connection to Mi Account. If the phone is not tied to a Xiaomi account, the system will request authorization.

Method 2: Delete theme files through the file manager

If a standard reset doesn’t work, you can manually delete the theme files, which requires a root file manager (such as MiXplorer or Solid Explorer) or access via ADB.

Instructions for users without root:

1. Connect your phone to your PC and enable USB Debugging (Settings → About Phone → MIUI → 7 times tap to activate the developer mode).
2. Install. ADB Tools to your computer and run the command: adb shell pm uninstall -k --user 0 com.android.theme.icon_pack
3. Reboot the phone.

For users with root:

1. Open the file manager and go to /data/system/theme/.
2. Delete theme names (e.g. com.example.customtheme).
3. Clear the theme app cache (Settings → Apps → Application Management → Topics → Clear the cache).

⚠️ Note: Removing files from /system without root rights or through the wrong commands ADB It can lead to bootloop. If you're not sure, use the method. 3 (factory-setting).

Method 3: Complete reset to factory settings

The last method that is guaranteed to return the standard theme, but remove all the data from the phone is suitable if:

• 🔧 Previous ways didn't work.
• 📱 The phone is slowing down due to the conflict.
• 🔒 No access to ADB root.

Step-by-step:

1. Back up your data via Settings → Additional → Backup or Mi Cloud.
2. Go to Settings → About the phone → Reset settings.
3. Select “Erase all data” (not to be confused with “Reset Settings!”).
4. Enter your password (if required) and confirm the reset.
5. After the reboot, set the phone as new – the standard theme will be applied automatically.

If the phone does not respond to the sensor or does not turn on:

1. Turn off the device (press the power button for 10 seconds).
2. Press Volume Up + Power to enter Recovery Mode.
3. Select “Wipe Data” (manage volume buttons, confirmation – power button).
4. After reset, select "Reboot".

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Resetting to factory settings removes not only themes, but all accounts, photos, messages, and only use this method if other options are exhausted.

Method 4: Flashing through the Mi Flash Tool (for experienced)

If the reset didn’t work (for example, because of corrupted system files), you can still reflash the phone, which requires a PC, a USB Type-C cable, and the official firmware for the Redmi Note 9.

Preparation:

• 🖥️ Download the Mi Flash Tool from Xiaomi’s official website.
• 📄 Download the firmware for your model: Redmi Note 9 (merlin) – link Redmi Note 9 Pro (joyeuse) – choose the Global version or EEA Redmi Note 9S (Curtana – Check model code compatibility in Settings → The phone.
• 🔌 Install Qualcomm drivers USB (If Windows does not recognize your phone in Fastboot mode).

Firmware:

1. Turn off the phone and press Volume Down + Power to log into the Fastboot.
2. Connect the phone to the PC.
3. In the Mi Flash Tool, click “Select” and specify the path to the unpacked firmware.
4. Select the “Clean All” mode and click “Flash”.
5. Wait for the finish (5-10 minutes) and restart the phone.

⚠️ Note: Firmware through Fastboot resets IMEI and MAC-address on some Redmi Note 9 models. After the procedure, check their integrity in Settings → The phone. → General information, if IMEI Disappeared – Restore it with Engineer Mode (code #4636##).

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Before you run your firmware, turn off antivirus on your PC, which can block Mi Flash Tool files as “suspicious.” Also use the original Xiaomi cable: cheap counterparts can interrupt data transfer.

Frequent mistakes and their solutions

Even after a successful theme reset, Redmi Note 9 users are plagued by bugs, and consider the typical issues and ways to fix them:

If after all the manipulations the topic is still not reset, check:

• 📋 Version MIUI: beta-fixed (MIUI Beta) there are often bugs with themes.
• 🔒 Access rights: some topics (especially from the APK) install system services that block reset. Check Settings → Annexes → Permits.
• 🛠️ System integrity: If the phone has previously undergone modifications (e.g., via Magisk), restore the stock boot.img.

How to avoid problems with topics in the future

To avoid having to return to the standard theme, follow these guidelines:

• 🛡️ Install topics only from the official MIUI Theme Store. APK-Files may contain viruses or incompatible components.

If you’re a frequent fan of design, consider using alternative launchers (like Nova Launcher or Lawnchair) that let you change icons and style without interfering with MIUI system themes, making it easier to roll back to the standard look.

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Official themes from MIUI Theme Store are tested by Xiaomi for compatibility, but even they can conflict with some firmware versions.Always check other users' reviews before installing.

FAQ: Answers to Frequent Questions