How to reset to factory settings video recorder Xiaomi 70mai: all ways + expert advice

Xiaomi 70mai DVRs (A500, A800, Pro+, and others) are known for stable operation, but even they sometimes require a complete reset. The reasons range from freezing after a firmware update to incorrect GPS settings or video recording errors. In this article, 3 proven reset methods (including hidden button combinations), a table of compatibility with models and answers to frequent questions after zeroing.

Important: the reset removes all user settings (video resolution, frame rate, parking area), but does not affect the recorded files on the memory card - they will have to be deleted manually. If the recorder does not respond to the buttons, first check the battery charge (plug into the lighter) and the status of the microSD card (try another formatted in FAT32).

1. Soft reset via the settings menu (for working devices)

This method is suitable if the recorder is turned on but is unstable: it slows the interface, does not save settings or incorrectly determines the speed, the procedure takes no more than a minute and does not require a connection to the PC.

Instructions:

• 🔧 Turn on the registrar and wait for the main screen to load.
• 📱 Press the Menu button (usually on the right under the screen) and select Settings. → System system → Resetting settings.
• ⚠️ In some models (for example, 70mai A800) The other way: Settings → General. → Recovery and discharge → Resetting all settings.
• 🔄 Confirm the action by selecting Yes (button) OK sensory).

After the reboot, the registrar will return to the factory parameters, but will retain:

• 📁 Video and photo files on memory card.
• 🔋 Date/time settings (if synchronized by GPS).
• 📶 Bluetooth connected devices (provided the reset did not affect the communication module).

⚠️ Note: If after resetting the registrar 70mai Midrive D07 or A500S stopped recognizing the memory card, format it in FAT32 with a cluster size of 32 KB via a PC. NTFS will cause a record error.

2. Hard button reset (if the registrar does not turn on or freezes)

When the device doesn't respond to the screen, reboots cyclically, or shows the 70mai logo and doesn't go any further, a hardware reset will help. It uses physical buttons on the body. It works on all models, including the 70mai Pro+ and Omni.

Step-by-step:

1. Turn off the recorder from power (remove the cable from the lighter).
2. Press and hold the Power button for 10-15 seconds until you feel vibration or see the indicator flashing.
3. Keep Power on the line, plug the power back in. Hold the button for another 5-7 seconds until the recovery menu appears.
4. From the menu, select Wipe Data/Factory Reset (use volume buttons for navigation, Power buttons for confirmation).
5. Once the process is complete, the registrar will restart automatically.

🔹 Features for different models:

⚠️ Attention: On models 70mai A800S And then the new hard reset also resets the camera calibration (viewing angle, exposure). → Calibration, otherwise the video may be too dark or light.

3. Firmware reset (if standard methods do not help)

In rare cases, a software reset doesn't solve the problem -- for example, if the registrar doesn't turn on after a failed update or shows a System Error error. Then flashing through the microSD card will help, which takes longer, but restores the device even after serious failures.

What you need:

• 💾 MicroSD memory card (up to 32 GB, FAT32).
• 💻 Computer with Internet access.
• 🔗 Official firmware for your model (you can download on the website) 70mai).

Instructions:

1. Download the firmware (a file with the.bin or.fw extension) and unpack the archive.
2. Format your memory card in FAT32 (use SD Formatter for reliability).
3. Copy the firmware file to the card’s root directory (not to the folder!) and rename it to fw96660a.bin (for A500/A800 models) or dashcam.fw (for Pro+).
4. Put the card in the recorder off and connect the power. The reset will start automatically (the indicator will flash yellow).
5. Wait for the completion (5-10 minutes) and restart. Don't turn off the device during the process!

Critical information: On the 70mai 2022 and later models (e.g., A810), firmware checks the digital signature of the file. Using unofficial or modified files will lead to locking the bootloader - the registrar will turn into a "brick."

4. Frequent errors after reset and how to fix them

Even after a successful reset, users face typical problems, and here are the most common ways to solve them:

Problem 1: The Registrar does not save settings after turning off.

• 🔋 Check the status of the battery – if it is worn out, the device does not have time to write the configuration in memory.
• 🔄 Reset and reset the settings again without turning off the recorder for 5 minutes.

Problem 2: The camera records video of artifacts or "teared" sound.

• 📁 Format the memory card through the registrar: Settings → Memory. → Format.
• 🎥 Set the permit. 1080p 15 Mbps bitrate (optimum for most cards).

Problem 3: GPS does not detect coordinates or shows incorrect speed.

• 📡 Update the almanacs GPS: Leave the registrar in the open space for 10-15 minutes.
• 🔧 Settings menu → GPS Enable the option of autosynchronization of time.

💡

If the 70mai A800 registrar does not connect to the app after reset, remove it from the device list in Mi Home and add it again. To do this, click Delete Device → Add manually → select the model from the list.

5 How to save important data before resetting

Reset removes all user settings, but does not touch files on the memory card. However, if you want to save GPS logs, parking area settings or selected routes, do the following:

Method 1: Backup through the 70mai application

• 📱 Open the application and connect to the registrar via Wi-Fi.
• 🔄 Go to the Device. → Settings → Backup copy.
• 💾 Save the configuration file to your phone (will have an extension.70mai).

Method 2: Manual copying of files from memory card

• 🖥️ Connect the MicroSD card to the PC via the card reader.
• 📂 Copy folders: Config - device settings; GPS — Logic coordinates; Parking – data of parking mode.
• 🔄 Return the files back after reset (except System – you can not touch it!).

⚠️ Note: Do not copy files with the.tmp or.bak extension, which are temporary data that can cause conflicts after recovery, and it is not recommended to transfer files between different models of registrars (for example, with the help of a computer). A500 on A800), As configuration formats may differ.

6.When the dumping does not help: alternative solutions

If after all the manipulations, the registrar does not turn on, does not record video or shows a download error, the problem may be:

• 🔋 Battery – bloating or full discharge (try running without battery by connecting directly to the lighter).
• 🛠️ Hardware failure – damage to the board after falling or overheating.
• 📶 Module Wi-Fi/Bluetooth — If the connection to the application does not work.

🔧 What do you do:

• 🔍 Conduct a visual inspection: whether there are any darkenings, bloated capacitors or oxidation on the board.
• 📞 Contact support. 70mai — If the device is guaranteed, repairs can be free of charge.
• 🛒 For old models (A500 2019 and earlier – sometimes it’s cheaper to buy a new registrar than to fix the old one.

💡

If the recorder is turning on but not recording video, check the status of the memory card - 90% of these problems are related to damaged sectors of the drive. Use the H2testw utility to check the card for authenticity and errors.

FAQ: Answers to Frequent Questions