How to sync two Xiaomi TVs: 5 working ways + error solving

Synchronizing two Xiaomi TVs is a challenge that users who want to create a single multimedia system in the home, for mirroring the screen, synchronizing content or managing multiple devices from one remote control. Unlike standard HDMI-CEC or Miracast functions that work with one device, synchronizing two TVs from Xiaomi requires specific settings — especially if we are talking about models of different series (Mi TV 5 Pro and Redmi Smart TV X2022) or firmware with limited support for multithreading.

In this article, we will discuss 5 proven synchronization methods – from basic Mi Home connection to advanced methods using the same. ADB-Special attention will be paid to the unique feature of Xiaomi firmware 2023-2026: blocking simultaneous control of two TVs through one Mi Account, and show how to circumvent it. If you encounter errors like “Device is not responding” or “It is impossible to connect to the network” – there is a section with solutions at the end of the article.

Synchronization through Mi Home (official method)

The easiest method is to use the Mi Home app (now Xiaomi Home), which allows you to control multiple Xiaomi devices in the same ecosystem. However, here is a caveat: not all TV models support multichannel control through this application. For example, the Mi TV 4S and Redmi TV A55 can be displayed in the list of devices, but you can not synchronize their content directly, just turn on/off or adjust the volume.

To check the compatibility:

• 📱 Install the latest version of Mi Home (Android/iOS) Sign in to one account on both TVs.
• 🔄 Go to Profile. → Settings → Devices and make sure both TVs are displayed in the same house".
• 🎯 Try sending a command (e.g., Turn off) – if it is running on both TVs, then basic synchronization is possible.

To fully synchronize content (for example, play one video on two screens) will require:

1. Connect both TVs to the same 5GHz Wi-Fi network (2.4GHz may cause delays).
2. In the settings of the TV, activate the Miracast option (Settings → Connections → Wireless display).
3. On the main TV, run the broadcast through Mi Screen Mirroring, and on the second, select it in the list of available devices.

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If the TVs don’t find each other through Miracast, try turning off the VPN or firewall on the router – they can block local device detection.

2.Use of HDMI-CEC for synchronous control

Technology HDMI-CEC (Xiaomi called Mi AnySee allows you to control multiple devices through one remote if they are connected to one device. AV-This method is suitable for synchronizing the basic commands: on/off, volume control, channel switching. HDMI-CEC not intended.

How to set up:

1. Connect both TVs to a receiver or soundbar via ports HDMI ARC (If they don’t, use the usual ones. HDMI-port).
2. On each TV, activate Mi AnySee: Settings → HDMI-CEC → Enable.
3. In the receiver menu, select Sync Output mode (the name may vary depending on the model).

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HDMI-CEC is not suitable for screen mirroring, only for synchronous control of the remote. Use Wi-Fi Direct or Miracast to duplicate content.

3. synchronization over Wi-Fi Direct (for mirroring)

If you need to duplicate the screen of one TV to another (for example, for presentations or game tournaments), use Wi-Fi Direct. This method works without a router, but requires both TVs to support Screen Mirroring. Importantly, on Xiaomi, this option can be hidden in the engineering menu on old firmware.

Step-by-step:

Make sure both TVs are no older than 2022 | Turn off Bluetooth on both devices | Connect both TVs to the same outlet via a network filter |Run "No Sound" mode on the second TV (avoids echo)

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1. On the main TV (signal source) go to Settings → Connections → Wi-Fi Direct.
2. On the second TV, select Settings → Screen → Wireless Display → Device Search.
3. Confirm the connection on both devices. The second TV may be asked to enter. PIN-code (usually 0000 or 1234).
4. Run the content on the main TV – it should automatically duplicate on the second.

Note the latency: video playback can be as long as 1-2 seconds apart. This is critical for gaming, so it's better to use wired methods (HDMI-splitter).

Advanced synchronization through ADB (for experienced)

If standard methods do not work (for example, due to different firmware versions), you can use the ADB-Forcing synchronization commands, this is a method that works for Android models. TV and requires the inclusion of debugging by USB. Warning: Incorrect commands can cause system failure!

Algorithm of action:

1. On both TVs, turn on USB Debugging: Settings → About TV → Build Number (click 7 times), then go back to Settings → For Developers → Debugging by USB.
2. Connect both TVs to the PC via USB (use OTG-cable USB-port).
3. Open the terminal on your PC and enter the commands: adb devices (both devices must be displayed) adb -s [ID_First TV Show: Shell Input Keyevent 3 (This is the Home team -- check the link)
4. To synchronize brightness/volume, use: adb shell settings put system screen_brightness 150 (where 150 — brightness 0 before 255).

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ADB-And the commands allow you to synchronize settings, but not content. You still need Wi-Fi Direct or Wi-Fi Direct to duplicate the screen. HDMI-splitter.

Warning:

⚠️ Use of the ADB This can result in Mi Account being blocked if the TV is linked to an account with the active Find Device function. → Account. → Remove the device.

5. Synchronization through third-party applications

If the built-in features of Xiaomi are not satisfied, you can use third-party apps from Google Play (for TV on Android TV):

• 🎮 LocalCast – to broadcast content from one TV to another over a local network.
• 🔄 ApowerMirror – mirroring the screen with a delay of up to 0.5 seconds.
• 📺 TV Cast – Support for streaming video (YouTube, Netflix) on two screens.

How to set up LocalCast:

1. Install the app on both TVs (via Google Play or APK).
2. On the main TV, select the file to broadcast, then click Cast to and select the second TV.
3. On the second TV, confirm the flow.

Limitations:

• 🚫 No support. DRM-Protected Content (Netflix, Disney)+).
• 📶 Requires stable Wi-Fi 5 GHz (2.4 GHz will lag).
• 💰 In the free version of ApowerMirror, a watermark is displayed on the screen.

6. Solving common errors

When syncing two Xiaomi TVs, users often face the following problems:

Critical error:

⚠️ If, after attempting to synchronize, ADB One of the TVs stopped turning on (black screen with flashing indicator), which indicates damage to the bootloader. Solution: Shut the TV off the network for 10 minutes. Press the Power button. + Volume Down for 15 seconds to reset. If it doesn't work, run the TV through the box. USB Burning Tool (instructions on the official website).

FAQ: Frequent questions about synchronization