Why Xiaomi’s Registrar Has No Sound and How to Fix It
Xiaomi DVRs (including the 70Mai, MiVUE and Redmi models) often face the problem of not having sound in their recordings, despite having a built-in microphone, ranging from trivial settings to hardware malfunctions, and 80% of the time, the problem is solved software-based without going to a service center.
The main culprits for the lack of sound: a switched off microphone on the menu, outdated firmware, a failure of settings after an update or physical damage to the connector. GPS-In this article, we will discuss all the ways of turning on sound, from elementary to advanced, taking into account the features of different models.
⚠️ Important: If Xiaomi’s recorder hasn’t recorded the sound since purchase, check the integrity of the tape on the microphone (often forgotten to take it off!). Also make sure the device is not in Parking Mode – in some models, the sound in this mode is turned off automatically to save energy.
Method 1: Enable sound through basic settings
The simplest method is to activate the microphone in the logger menu, and the interface may vary depending on the model, but the general logic is maintained.
- Start the registrar and wait for the main screen to load.
- Press the Menu button (usually located on the right or bottom of the case).
- Go to Settings → Sound (or Audio Settings)
- Find the Microphone and set the value of On.
- Save the changes and restart the device.
On the 70Mai Pro and MiVUE 795, the path might look like this: Settings → Recording → Audio Record. If the Audio item is not on the menu, then the microphone is controlled by a global record switch - look for the Record Sound option.
The microphone is not covered with a protective film.
The Registrar is not in Parking Mode
Loudness in settings is not at a minimum
The device is not connected to external modules (GPS, camera)
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⚠️ Note: on some Xiaomi registrars (e.g, 70Mai Midrive D06) the sound is turned off automatically when connected to the lighter with a voltage higher 5.1V. Use the original power adapter!
Method 2: Update the firmware to restore sound
If the microphone is on but there is no sound, the problem may be in outdated software. The manufacturer regularly releases updates to fix audio capture bugs. For example, v1.2.8 for the MiVUE 798 has been fixed by a bug that caused the sound to disappear after 10 minutes of recording.
How to update firmware:
- Download the latest version of the software for your model from the official Xiaomi website.
- Copy the firmware file (usually with the.bin or.fw extension) to the memory card.
- Insert the card into the registrar and go to Settings → Software Update.
- Select a file and confirm the installation. Don't turn the device off during the process!
After the update, perform a reset (Settings → Reset) – this will help to avoid conflicts of old parameters with the new firmware.
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Before upgrading, check the version of the current software in the Settings → About Device menu. If the version is newer than the site, do not install the old firmware - this can cause crashes!
| Registrar's model | Current firmware (2026) | Corrected sound bugs |
|---|---|---|
| 70Mai Pro | v1.5.3 | Disappearance of sound during long recording |
| MiVUE 795 | v2.1.0 | Noises when connected GPS-module |
| Redmi Car Recorder | v1.0.7 | No sound in night mode |
Method 3: Hardware resetting settings
If the software methods didn't work, try hard reset, which will return the recorder to the factory settings, including the microphone settings.
- Turn off the recorder.
- Press the Menu button (or Power + Menu for some models) and hold for 10-15 seconds.
- After the Xiaomi logo appears, release the buttons.
- The device will restart and offer to configure the parameters again.
⚠️ Warning: reset will delete all stored video files and settings! Pre-copy important recordings on the computer. 70Mai Midrive D07 After reset, you may need to recalibrate the camera – follow the on-screen tips.
What if the reset didn't help?
Method 4: Checking the microphone and connectors
If none of these things worked, it could be a hardware malfunction.
- 🔍 Microphone: usually located next to the lens or on the top panel, check if it is dusty or closed with a sticker.
- 🔌 Power connector: oxidation of contacts can cause malfunctions, including shutting down the sound.
- 💾 Memory card slot: If contacts are bent, the registrar may not correctly save the audio track.
To clean the microphone, use a soft brush or compressed air. Do not use alcohol or liquids, this can damage the membrane. If everything looks fine, but there is no sound, try connecting the recorder to your computer via USB and check the recording through the Mi PC Suite program (available on the official website).
Yeah, it's working.
No, there's no sound at all.
It's sounding, but with noise.
Didn't check.
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Method 5: Alternative methods of recording sound
If the built-in microphone doesn’t work, but you need audio, consider workarounds:
- 🎤 External microphone: Some models (e.g., MiVUE 798) support external microphones via a 3.5mm port or a new model. USB-C.
- 📱 Smartphone Sync: Use the Mi Home app to record sound to your phone in parallel (a feature available for Wi-Fi recorders).
- 🔧 Firmware modification: on forums (for example, 4PDA) There are custom firmware with a corrected audio driver, but it is risky!
Important: Connecting an external microphone can break the sealing of the case, which will lead to moisture. Use only certified accessories from Xiaomi.
Frequent Mistakes and How to Avoid Them
Many users make the sound problem worse by doing the wrong thing.
- 🚫 Use of unoriginal cables: cheap power wires can cause voltage surges that shut down the microphone.
- 🔄 Frequent reboots: if you constantly pull the power cord instead of turning it off correctly, the sound settings may get lost.
- 🗑️ A filled memory card: if space is scarce, the recorder can save video without audio track.
⚠️ Note: on Xiaomi registrars with function ADAS (Driver assistance system) the sound may be automatically muted when alerts are triggered.
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Before selling or transferring the registrar to another person, be sure to reset your settings – this will delete all personal audio recordings!