Wireless speakers often face a situation where one of the headphones stops working in pairs with the other, instead of stereo, the user hears music on one side only, or the devices can't see each other at all, a common problem that is solved by forced pairing of the left and right modules.
The process of restoring communication between modules is called flashing synchronization. Unlike a regular connection to a phone, you need to run a special mode that causes the gadgets to "find" each other without the smartphone. It is important to understand that the algorithms of actions can vary slightly depending on the series of devices.
In this article, we will explore the technical details of the True Wireless Stereo protocol in the Xiaomi ecosystem: how to perform a reset correctly, what indicators signal the success of an operation and why sometimes standard methods do not work.
The principle of TWS-headsets Xiaomi and the reasons for desynchronization
True Wireless technology means that the left and right headphones are initially independent. When removed from the case, they must automatically connect to each other, creating a single network, which then connects the smartphone. If this primary contact is broken, the stereo will split into two mono devices.
Most often, the dissynchronization is due to a difference in battery power levels, for example, if you used only one headphone while the other was in the case, their software can "forget" each other, and also cause interference in the air or firmware bugs of the smartphone itself.
In rare cases, the oxidation of contacts on the device itself or in the charging case is to blame. Xiaomi uses different chipsets (Qualcomm, Realtek, BES), and each of them reacts differently to signal loss. Understanding the physics of the process helps to diagnose the problem faster.
It’s worth noting that some budget models don’t have a full-fledged auto-reconnect function, and in such gadgets, manual user intervention is the only way to return the stereo mode, and ignoring simple rules of operation also leads to frequent crashes.
Preparation for the procedure: cleaning the list of conjugated devices
Before trying to connect the headphones, you need to completely remove them from the phone's memory. If the smartphone sees an old stored device, it may try to connect only one module, blocking the process of pairing, a critical step that is often ignored.
Go to your mobile device's Bluetooth settings. Find your model, like AirDots or Redmi Buds, and click "Forget Device" or "Delete." Repeat the procedure if there are still double entries with the same name on the list.
Once removed, you need to turn off Bluetooth on your phone completely, which will prevent automatic connection during the setup process. Some users mistakenly just disconnect the device, but to be clean, you need a complete disconnect.
⚠️ Warning: Do not leave Bluetooth on while resetting your headphones.A phone background search can intercept one of the modules and the pairing procedure between your left and right ear won't start.
Make sure that both the headphone and the case itself are charged at least on the 50%. Unstable voltage can interrupt the firmware process in the middle, which will cause the controller to freeze. 10-15 minutes to balance the charge before starting work.
Universal method of resetting through touch panels
Most modern Xiaomi models, including the popular Mi True Wireless Earbuds Basic, use touch controls to reset. This method does not require physical buttons on the case case.
Take both earbuds out of the case. If they're on or blinking, press the touch zones on both devices simultaneously, hold them for about 5-7 seconds until the lights go out, and this force shuts them down.
Then press the sensors again, but now hold them longer - around 20-30 You'll see the indicators flash red several times and then light up white or orange, and that's when the factory resets.
- 🔴 The first flashing in red means entering the reset mode.
- 🟡 Long blinking white signals readiness to mate.
- 🔵 Fast flashing blue indicates search for second module.
- ⚪ Burning of one indicator (or a rare blink) indicates a successful pair connection.
Once the lights are gone or in rare flashing mode, put the headphones back in the case. Close the lid and wait 5-10 seconds. Now you can open the case and turn on Bluetooth on your phone to find a new device.
☑️ Checklist of sensor reset
Connecting models with a physical button on the case
More advanced models, such as the Xiaomi FlipBuds or Air 2 Pro, feature a functional button on the charging case.This control allows you to initiate pairing or reset mode without having to touch the headphones themselves, which greatly simplifies the process.
Place both earbuds in the case and leave the lid open. Find a button on the case (usually round and can be hidden under the lid or located behind). Press and hold it for 10-15 seconds.
The case indicator will start flashing white, going into fast-blink mode, which means that the devices have cleared the memory and are now looking for each other, and in some models you need to press the button twice quickly, and then hold it.
Sequence of action:
1. Put L and R in the case.
2. Open the lid.
3.Push and hold the 10 sec button.
4. Wait for the white flash.
5. Close the lid for 5 seconds.If the button doesn't respond, check if there's a charge in the case itself. Sometimes, to activate the reset mode, it requires the case to be connected to the charger via a Type-C cable. This provides stable power to the controller at the time of reset.
What to do if the button on the case does not work?
Specificity of connecting different series of devices
Xiaomi’s ecosystem is vast and different product lines have their own characteristics, such as Redmi Buds 3 Pro gaming models that may require double taps to enter mode, while basic AirDots only respond to long-term retention.
Active noise reduction models (ANC) Often have a separate regime for discharge ANC-If you've had a monophonic sound after a normal reset, try doing it again, but this time, don't take your headphones out of the case until the lights are flashing.
The table below shows the differences in indications for popular series, which will help you interpret device signals correctly during setup.
| Model/Series | Action for discharge | Indication of success | Retention time |
|---|---|---|---|
| AirDots / Basic | Hold the sensors down. | 3 times flashes red | 20-30 seconds |
| Redmi Buds 3/4 | The button on the case | White flashing fast | 10 seconds. |
| Mi True Wireless 2 | Hold the sensors down. | Orange light | 15 seconds |
| FlipBuds Pro | The button on the case | White pulse | 12 seconds |
It is important for owners of Gaming Edition devices to know that low latency (Low Latency Mode) may conflict with the reconnection process, and it is recommended to temporarily disable the game mode through the application, if installed, before starting the reset procedure.
⚠️ Warning: Don't try to connect headphones of different models with each other. The left earphone from AirDots 1 will not work in pairs with the right one from AirDots 2, even if they look the same.
Using Xiaomi Earbuds App for Diagnostics
For deep tuning and checking the status of the connection, it is recommended to use the official Xiaomi Earbuds or Mi Home application. These utilities allow you to see the real charge of each headphone individually and the version of their firmware.
If one earphone doesn’t connect after all the manipulations, the app can show a “Not Found” error or indicate a critically low charge even if the indicator is on, a sure sign of a hardware problem or a deep discharge.
The application can sometimes initiate a firmware update. Software updates often contain patches for Bluetooth stack bugs that are responsible for the stability of the connection between modules. Don't ignore the available updates.
- 📱 Check the version of the app in the Play Market or App Store.
- 🔋 Monitor the level of charge of each headphone in real time.
- 🔄 Use the “Hearburst Search” feature to make sure both devices are active.
The app also has a control setting feature available, and if the sensors aren’t working properly, try reassigning actions (like changing tracks to pause) and checking if the problem earphone is responding to commands.
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If the app can’t see the headphones, try connecting them to another smartphone, which will help you understand where the problem lies: in the gadget itself or in the Bluetooth module of your main phone.
Solving charging problems and hardware malfunctions
A common reason for not being able to connect headphones to each other is the banal lack of charge in one of them, and the contacts in the case could oxidize or shift, which causes the device to not charge while it is lying inside.
Take a wet (but not wet) napkin and wipe the metal contacts on the headphones themselves and inside the case. Carefully move the headphone in the socket - the charging indicator should catch fire. If this does not happen, you may need to replace the case.
If one earphone is discharged to zero, it may need to "rock" Leave the devices in the connected case for 1-2 hours, even if the indicators are not burning.
In cases where software methods don't work, you can try hard-discharge, leave the headphones out of the case until you turn them off, then put them back on charge, sometimes helping to reset the power controller error.
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Successful connection of Xiaomi headphones depends on three factors: the same level of charge, clean contacts and the correct timing of resetting settings.