How to change the language on the robot vacuum cleaner Xiaomi Vacuum S12: all ways

Why Xiaomi Vacuum S12 owners are facing the problem of changing the language?

The Xiaomi Vacuum S12 is one of the most popular smart cleaning devices, but its interface is not always intuitive, especially when it comes to language changes that may be required after purchase at overseas sites (such as AliExpress or Gearbest), where the device often comes with Chinese or English firmware. Unlike Xiaomi smartphones, where the language changes in Android settings, the process here depends on the firmware version and regional server in the Mi Home app.

The main difficulty is that some versions of S12 firmware block language change without being tied to a Chinese server, which means that even if you choose Russian in the app settings, voice prompts and menus on the display (if any) can remain in the original language. In this article, we will discuss all working methods, from basic to advanced, including bypassing regional restrictions.

It is important to consider that Xiaomi Vacuum S12 was released in several versions (for example, for the European and Asian markets), and their firmware may differ. If your device was purchased in Russia, most likely, Russian is already installed by default, but for “gray” imported models will require additional configuration.

Method 1: Change the language through the Mi Home app (official method)

The easiest and safest way is to use the branded Mi Home app (or Xiaomi Home in newer versions), which works if your vacuum cleaner is tied to a server in Russia, Europe or the United States. Chinese servers will require additional steps (see the section on the Chinese server).

Step instructions:

• 📱 Open the Mi Home app and make sure that the Xiaomi Vacuum vacuum cleaner is available. S12 connected to your account.
• 🔧 Go to the Devices tab, select your vacuum cleaner and tap the icon. ⚙️ (Settings).
• 🌐 Scroll down to Language (or Language) and select Russian.
• 🔄 Confirm the changes and wait for the device to restart (may take up to 2 minutes).

If you don’t have Russian in the list of languages, it means your device is tied to the wrong region, and changing the server in Mi Home will help (see next section).

Make sure the vacuum cleaner is on and connected to Wi-Fi

Update the Mi Home app to the latest version

Check that your Xiaomi account is not blocked (sometimes required) SMS-confirmation)

Close background applications that may interfere with synchronization-->

Method 2: Change the regional server in Mi Home to unlock languages

If your Xiaomi Vacuum S12 was purchased in China or comes with Chinese firmware, it is by default tied to the Mainland China server, in which case only Chinese and English will be available in the language settings.

Important: if you change the server, all these devices will reset, and the vacuum cleaner will have to be reconfigured, and you may also need to create a new Xiaomi account with a VPN (if your current account is tied to China).

Step-by-step:

1. Open Mi Home and go to Profile → Settings → Region.
2. Choose Russia (or Europe if there is no Russia).
3. Leave the account and log in again.
4. Remove the vacuum cleaner from the list of devices and add it again, following the instructions in the application.
5. After adding, check the presence of Russian in the settings.

In Russia (official dealer)

On AliExpress/Overseas website

In China (direct delivery)

B/w off the hand-->

If the Russian language did not appear after the server change, it may mean that the device's firmware does not support localization, in which case only firmware through informal methods will help.

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Before changing the server, take screenshots of the current vacuum cleaner settings (cleaning schedule, zones, suction power) to help quickly restore the configuration after resetting.

Method 3: Manually change language through physical buttons (for display-free models)

Some versions of the Xiaomi Vacuum S12 (especially budget versions) do not have a display and are controlled exclusively through buttons on the case. In such cases, the change of language is possible only through a combination of buttons, but this method does not work on all firmware.

Instructions:

1. Turn on the vacuum cleaner by holding the Power button for 3 seconds.
2. Press and hold the Power and Home buttons (or Spot Clean if there is no Home button) for 10 seconds until you hear the beep.
3. Release the buttons. The vacuum cleaner will issue a voice message in the current language (e.g., "Language selection").
4. Press the Home button briefly to switch languages. After choosing Russian, confirm by pressing Power.

The list of available languages is voiced, so if you don’t know Chinese, focus on the order of the following:

Method 4: Firmware alternative localized firmware (advanced method)

If none of the above methods worked, the last resort is to install unofficial or modified firmware with Russian support, a method that is suitable for advanced users because it requires computer work and risks voiding the warranty.

You'll need:

• 💻 Windows computer 10/11 macOS.
• 🔌 USB-Type-C Cable (to connect vacuum cleaner to PC).
• 📁 Firmware with support for Russian (can be found on the forums) 4PDA Xiaomi Community).
• 🛠️ Mi Home Hack or Xiaomi Flash Tool.

Step-by-step:

1. Download the firmware for the Xiaomi Vacuum S12 from a trusted source (such as a theme on 4PDA). Pay attention to the version: it must match your model (check on the sticker under the cover).
2. Unpack the archive with firmware and install drivers for the vacuum cleaner (usually come with a kit).
3. Connect the vacuum cleaner to the computer through USB-cable holding the power button + Home to switch to firmware mode.
4. Launch the Xiaomi Flash Tool, select a firmware file (.bin or.img) and press Flash.
5. Wait until the process is complete (don't turn off the cable!) the vacuum cleaner will restart automatically.

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Firmware through unofficial sources can lead to loss of functionality (for example, a laser sensor failure or problems with connecting to Wi-Fi).Always backup the original firmware before starting the process!

⚠️ Note: Some firmware contains viruses or spyware. download files only from trusted forums (4PDA, XDA Developers) and be sure to check them with antivirus. If the vacuum cleaner stopped turning on after the firmware is done, try returning the original firmware via Fastboot mode (hold Power when connecting to your PC).

Frequent mistakes and their solutions

Even following the instructions, users often encounter problems, and here are the most common mistakes and ways to fix them:

If none of the solutions worked, check:

• 🔋 Battery level (must be at least 30%).
• 📶 Internet connection stability (Wi-Fi 2.4 GHz, as 5 GHz may not be supported).
• 📱 Mi Home version (update to the latest version).

Additional tips for setting up after changing the language

After a successful language change, it is recommended to perform several additional actions to ensure that the vacuum cleaner works correctly:

1. Update your firmware through Settings → Update the software in Mi Home. This will fix possible localization bugs.
2. Set up a voice assistant: in some firmware, Xiao AI’s voice remains in Chinese even after changing the language. To fix this, go to Settings → Voice Assistant and select the Russian package.
3. Reset the room map: if you've already created a map before you change your language, it may contain errors. Delete it and recreate it.
4. Check regional cleaning settings: in some countries, maximum suction power is limited (e.g. 800 Pa in the EU instead of 2500 Pa) and these restrictions may be reset once the language is changed.

If you use voice control (for example, through Alice or Google Assistant), after changing the language, you may need to re-assign the device to the voice assistant.

1. Open the Yandex or Google Home app.
2. Remove the Xiaomi Vacuum S12 from the list of devices.
3. Add it again through the "Add device" function.

FAQ: Answers to Frequent Questions