How to Switch a Xiaomi DVR: Official and Unofficial Ways

Xiaomi DVRs (including the 70mai and MiVue sub-brands) require regular firmware updates to fix bugs, improve recording stability, and add new features — such as supporting new resolutions or optimizing night shooting. However, the firmware process often raises questions about where to download official software, how to avoid “bricking” the device, and what to do if the recorder stopped turning on after a failed update.

In this article, we will analyze all the current methods of firmware (via application, memory card, PC), analyze typical errors (for example, Error 0x80070005 or hanging on the Mi logo), and give a checklist for a safe update. We will separately focus on informal firmware — when they are justified, where to look for them, and what risks are involved. If your Xiaomi 70mai Pro or MiVue 798 registrar is glitzy after the update, here you will find a solution.

1. Firmware Preparation: What to Do Before Updating

An unprepared firmware update can turn the DVR into a brick. Before you start, follow the mandatory steps:

• 🔋 Charge the battery to 100% or connect the recorder to charge. Discharge interruption is the most common cause of breakdown.
• 📋 Check the current version of the software. Go to Settings → About device → The firmware version. Compare it to the latest official version on Xiaomi's website.
• 💾 Back up important records. The firmware can reset or damage files on the memory card.
• 📥 Download the correct firmware. For 70mai Dash Cam 1S and MiVue 750, use files only from official sources (links below).

Pay special attention to the compatibility of the firmware with the model, for example, firmware for 70mai Pro Plus+ will not work for 70mai Midrive D06, even if they look similar, using the wrong file will lead to an error Invalid firmware or a complete failure of the device.

Download firmware from the official website | Check the version of the current software | Charge the device or connect to power | Copy important videos on PC | Format a memory card (FAT32)

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If you are updating the registrar for the first time, we recommend using the automatic method through the application (Section 2). Manual update via the memory card (Section 3) is suitable for advanced users or when the automatic method does not work.

2. Method 1: Firmware through the official application (the most secure method)

Most Xiaomi and 70mai models have an over-the-air update (OTA) available through the company’s app, which minimizes risks because it checks firmware compatibility and file integrity.

Step-by-step:

1. Install the Mi Home app (for Xiaomi registrars) or 70mai (for devices of this sub-brand) from Google Play or the App Store.
2. Connect the registrar to Wi-Fi or mobile Internet through the application (in the Devices menu → Your Registrar → Settings → Software Update).
3. If a new firmware is available, a notification will appear. Click Update and wait for the process to complete (usually 5-10 minutes).
4. After restarting, check the version of the software in the device settings.

⚠️ Warning: If the application is not stable during the update, try:

• 🔄 Reconnect the logger to another Wi-Fi point (use a 2.4GHz network as 5GHz may not be supported).
• 📶 Disable VPN or proxy on your phone — they can block access to Xiaomi servers.
• 🔌 Connect the recorder to charging if the battery level is below 50%.

Through the official app | Manually through the memory card | Through the computer | Never updated

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Important: After updating through the app, reset the registrar to factory settings (Settings → Restore and Reset) to eliminate any conflicts between the old settings and the new software.

Method 2: Manual update via memory card (for power users)

If the automatic update does not work (for example, due to slow Internet or server error), you can manually flash the registrar.

• 📁 Firmware file in.bin or.zip format (you can download it on the official website or 4PDA).
• 💳 A memory card up to 32 GB formatted in FAT32 (do not use exFAT or NTFS!).
• 🖥️ Archive decompressor computer (if firmware is.zip).

Instructions:

1. Download the firmware for your model (for example, for 70mai Dash Cam Pro, look for a file called 70mai_pro_vX.XX.bin).
2. Unpack the archive (if necessary) and rename the firmware file to fwdat.bin (this is important for some models!).
3. Copy the file to the root directory of the memory card (not to the folder!).
4. Insert the card into the recorder off, then hold the Power button (or Menu + Power for some models) for 10 seconds until the update starts.
5. Wait for the end (the indicator will flash green) and restart the device.

⚠️ Warning: If the registrar has been stuck on the Mi logo or 70mai for longer than 5 minutes after the firmware is installed, make a forced reset:

1. Remove the memory card. 2. Press and hold the Reset button (usually located next to the card connector) for 15 seconds. 3. Connect the recorder to charge and turn it on.

Method 3: Firmware through a computer (to restore "bricks")

If the logger does not turn on or freezes after a failed update, you may need to run firmware through your PC using special utilities, a method suitable for models based on Ambarella or Novatek processors (for example, 70mai Midrive D09 or Xiaomi MiVue 798).

Tools required:

• 🖥️ Windows PC 7/10/11 (macOS/Linux may require additional drivers).
• 🔌 USB-Type-C or USB-MiniUSB cable (depending on the recorder model).
• 🛠️ Firmware: - Ambarella Flash Tool (for Ambarella chips), - Novatek Tool (for Novatek chips), - MiFlash (for some Xiaomi models).

Step-by-step:

1. Download and install drivers for your registrar (usually come bundled with firmware utility).
2. Connect the Registrar to your PC in firmware mode: For 70mai: Hold Menu + connect USB. For MiVue: Hold Power + connect USB.

.bin

.fw

Start

Success

⚠️ Warning: If the utility gives an error USB Device Not Recognized, try:

• 🔄 Connect the registrar to another USB- port (preferably USB 2.0).
• 🔌 Use original cable (not all Type-C cables support data transmission).
• 🖥️ Disable the antivirus – it can block firmware utilities.

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If the logger doesn’t turn on after you’ve run through the PC, try holding the Reset button for 20 to 30 seconds, sometimes by re-running with another version of the software (for example, first on an older version, then on a new one).

5. Unofficial firmware: risks and where to look for them

Xiaomi’s official firmware isn’t always perfect: it may lack some features (such as manual bitrate adjustments or voice alerts), and users resort to custom firmware that the community is developing.

The advantages of informal slicings:

• ✅ Add new features (e.g., support for 2K@60fps on 70mai Pro).
• ✅ Removing unnecessary alerts or branding.
• ✅ Optimize nighttime operation.

Cons and risks:

• ❌ Warranty loss (if the device is warranty, it is better to use official software).
• ❌ Possible bugs (e.g., spontaneous reboots or artifacts in video)
• ❌ Risk of "bricking" in case of installation error.

Where to look for custom firmware:

• 🌍 Forum 4PDA (section "Video recorders").
• 📥 GitHub (search on request for 70mai custom firmware).
• 💬 Telegram chats (e.g. @xiaomi_dashcam).

Before installing custom firmware:

1. Check out other users’ reviews on the forums.
2. Make sure the firmware is compatible with your exact model (for example, the 70mai Dash Cam A500S and A500 may have different hardware revisions).
3. Make a backup copy of the original firmware (if possible).

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Unofficial firmware should only be installed if you are confident in your skills and ready for possible problems, and for most users, official software is the best choice.

6. Typical firmware errors and their solution

Even if you follow the instructions, you can have errors, and let's look at the most common ones and how to fix them.

If none of these methods worked, contact Xiaomi Service Center. In some cases (for example, if the bootloader is damaged), you may need to solder the memory chip.

7. How to roll back firmware to the previous version

If the registrar becomes worse after the update (for example, artifacts appeared in the video or stability deteriorated), you can return the old version of the software.

1. Find the archive firmware on 4PDA or the official website (under the "Previous versions" section).
2. Swipe it through a memory card (method 3) or a PC (method 4).
3. After the rollback, reset the settings (Settings → Restore and Reset).

⚠️ Warning: A rollback to an old firmware may result in:

• ⚠️ Loss of new features (e.g., support for H.265 or improved night mode).
• ⚠️ Conflicts with current settings (refuse the device to factory settings).
• ⚠️ Memory card compatibility issues (some new cards may not work with older firmware).

If you’re not sure if you need the older version, try resetting your current firmware first – often this solves problems without rolling back.

FAQ: Frequent questions about the firmware of video recorders Xiaomi