How to update the firmware of the registrar Xiaomi: 3 working ways + mistake-making

Xiaomi video recorders (including sub-brands) 70Mai And MiVUEs get regular firmware updates that fix bugs, add new features and improve stability, but the update process often raises questions about how not to brick the device, what to do if you make errors, and why the registrar doesn't see the new version of the software? In this article, we will analyze all the current ways of updating (via the application, memory card and PC), as well as typical problems - from Error 102 to hanging on the logo.

It's important to understand that the procedure varies depending on the model. 70Mai Pro+ MiVUE J199 Different file formats are used, and the registrars are ADAS (Driver assistance systems require additional calibration after the update.We have compiled instructions that will be suitable for most devices released after 2019, but before you start, be sure to check the firmware compatibility with your model on the official website.

1.Preparation for the update: what to do before the start

Before you start updating, follow a few critical steps, which can lead to data loss or even the registrar’s failure.

First, check the current firmware version.

• 📱 Launch the Mi Home app or 70Mai (model-wise).
• 🔍 Go to the section with your registrar → Settings of the device → About the programme.
• 📝 Write down the software version (for example, v3.12.8_R).

Second, prepare a memory card:

• 💾 Use the class map UHS-I U3 or higher (recommended volume up to 128 GB).
• 🧹 Format it in FAT32 through the Registrar (Settings) → Format a map).
• 📁 Make sure there is enough free space on the card (at least 1 GB).

💡

If the registrar does not format the card, try to do it through the PC using the utility. SD Card Formatter (you can download it on the website) SD Association).

Third, charge the device or connect it to charge. The firmware must not be interrupted by battery discharge. The optimal charge level is at least 50%.

Checked the current version of the firmware|The memory card is formatted in FAT32|Free space on the map ≥1GB|The device is charged or connected to the power supply|Download the official firmware file for your model-->

2. Method 1: Update via the Mi Home app / 70Mai (simple)

This method is suitable for most modern Xiaomi registrars and does not require manual file downloads, but it only works with a stable Internet connection.

Instructions:

1. 📱 Open the Mi Home app (or 70Mai for appropriate models).
2. 🔗 Connect to the registrar via Wi-Fi (password is indicated on the device case or in the documentation).
3. ⚙️ Go to the Device Settings → Firmware update.
4. 🔄 Click Check Updates. If the new version is available, follow the instructions on the screen.
5. ⏳ Wait for the process to be completed (usually 5-15 minutes.

Advantages of the method:

• ✅ Automatic compatibility check.
• ✅ Minimum risk of error.
• ✅ Saving custom settings (in most cases).

Disadvantages:

• ❌ Requires a stable Internet connection.
• ❌ The latest beta versions are not always available.
• ❌ It may not work on older models (e.g. Xiaomi Yi Car) DVR).

Method 2: Update via memory card (for power users)

If the registrar doesn't see the update through the app, or if you have slow Internet, you can download the firmware manually and install it from the memory card, which is universal, but requires care.

Steps:

1. 🌐 Download the official firmware for your model from the website: Official support Xiaomi (section Car) DVR). Website 70Mai (for appropriate models).

.bin

.fw

mi_dvr_pro_v3.15.7.bin

root-catalog

📺 Put the card in the registrar and turn it on. The update will start automatically (the progress bar will appear on the screen).

⏳ Do not turn off the device until the process is complete (usually takes 3-10 minutes).

Compatibility table of firmware files:

💡

Never rename a firmware file! The name must match the original, otherwise the registrar will not recognize it.

Method 3: Update via PC (to recover from a crash)

If the registrar doesn’t turn on or hovers on the logo after a failed update, firmware may be required via a PC, a method that is also suitable for installing beta versions of the software.

You'll need:

• 💻 Windows computer 7/10/11.
• 🔌 Cable USB (Micro-USB or Type-C, depending on the model).
• 🛠️ A firmware utility (for example, MiFlash or 70Mai Upgrade Tool).

Step-by-step:

1. 🌐 Download the utility and firmware for your model from the official website.
2. 📂 Unpack the archive with firmware in a folder without Cyrillic characters (for example, C:\mivue_firmware\).
3. 🔌 Connect the recorder to the PC in the off state.
4. 🖱️ Launch the firmware utility and select the unpacked folder with the software.
5. 🔄 Press Start and wait for the process to be completed (the Registrar screen may not show progress).
6. ⚡ After successful firmware, turn off the device and turn it on with the power button.

1. Use another. USB-cable (original).

2. Connect the device to the port USB 2.0 (not 3.0).

3. Run the utility on behalf of the administrator.-->

Warnings:

⚠️ Note: The firmware on the PC resets all the registrar settings, including date/time and write settings.

⚠️ Attention: Some models (e.g, 70Mai A800S) They require you to unlock the bootloader before you run the firmware through the PC. 4PDA.

5. Typical update errors and their solutions

Even when you follow instructions, you can have errors, and we'll look at the most common ones and how to fix them.

Error 102 ("Incorrect firmware file")

• 🔹 Make sure the firmware file is specifically designed for your model.
• 🔹 Check the integrity of the downloaded archive (unpack it again).
• 🔹 Rename the file back to the original name (if you have changed it).

Error 201 ("Verification error")

• 🔹 Format the memory card in FAT32 via recorder.
• 🔹 Try another memory card (class) U3 higher).
• 🔹 Check if the firmware file is corrupted (compare its hash with the official one).

Registrar got stuck on logo after update

• 🔹 Wait 10-15 minutes – sometimes the first download takes a long time.
• 🔹 If it doesn’t help, reset to factory settings (Reset button on the case).
• 🔹 When you freeze again, run the device through the PC (see Method 3).

The app doesn't see the new firmware

• 🔹 Check your internet connection (registrar must be connected to Wi-Fi).
• 🔹 Update the Mi Home app or 70Mai last-minute.
• 🔹 Try checking for updates through another region in the app settings (e.g. China instead of Russia).

6.What to do after the update: setup and verification

A successful upgrade is only half the battle, and after flashing it, it is recommended to follow several steps to make sure the device is working properly.

1. Resetting settings (optional)

If the registrar is unstable (for example, slows down the menu or does not save videos), reset:

• 📱 In the appendix: Device settings → Resetting settings.
• 🔧 On the device: Hold the Reset button for 10-15 seconds.

Verification of essential functions

Make sure that after the update:

• 🎥 Video recording (enable and check quality).
• 🔊 Sound (if it is important to your model).
• 📡 Wi-Fi and application connection.
• 🚗 Functions ADAS/LDWS (if supported).

Calibration of the chamber (for models with ADAS)

If your registrar supports driver assistance systems (ADAS), After the update, recalibration may be required:

1. 📱 Open the app and go to Settings ADAS.
2. 🎯 Follow the instructions on the screen (usually point the camera to the road and confirm the position of the markup lines).

Updating maps (for models with GPS)

Some registrars (e.g, 70Mai A800S) They have built-in maps to display high-speed cameras. After the software update, you may need to update the camera database:

• 🌍 In the app, go to Settings GPS → Updating maps.
• 🔄 Wait for the current database to load (can take up to 30 minutes).

7. How to roll back firmware if the update failed

If the registrar gets worse after the update (for example, artifacts appeared in the video or the device overheats), you can try to roll back to the previous version of the software. However, this process is risky - not all models support downgrade.

Warning:

⚠️ Note: Firmware rollback may result in loss of warranty (if the device is warranty) or irreversible damage (if the new firmware has changed the structure of the memory partition).Be sure that your model supports downgrade before you start (see forums for information).

Instructions for rollback:

1. 🌐 Find the archive with the previous firmware version (for example, on the 4PDA or in the archives of the official website).
2. 📁 Check that the version is older than the current version (compare numbers, for example, v3.12.5 → v3.10.1).
3. 💾 Copy the firmware file to a memory card (as in Method 2).
4. 🔄 Turn on the registrar – if the model supports downgrade, the rollback process will begin.

If the rollback fails:

• 🛠️ Try flashing the old version through a PC (see Method 3).
• 📧 Contact Xiaomi with a description of the problem (attach an error log if any).

8. Frequently Asked Questions (FAQ)