How to Switch a Xiaomi DVR: Official and Alternative Ways

Xiaomi video recorders (including popular series) 70mai, MiVue and Mijia require periodic firmware updates to fix bugs, add new features and improve stability, but the firmware process often raises questions among users: How not to "brick" the device, where to download current files and what is the difference between official updates from custom? In this article, we will analyze all methods of firmware - from automatic updates through the application to manual installation through the application SD-map USB-OTG.

It’s important to understand that the firmware procedure for registrars is different from the update of Xiaomi smartphones. There is no Fastboot or EDL mode, but there are nuances: from the file format (.bin,.fw) to the features of recovery after a failed update. We have collected current instructions for models in 2020-2026, including solutions to typical errors like “logo hanging” or “cyclic reboot”.

Preparation for firmware: what you need to know before you start

Before you start the update, check out three key points:

• 🔋 Battery charge: Make sure the recorder is connected to power via 12V-A car connector or external adapter, and a firmware with a battery discharged can cause permanent damage to the loader.
• 📋 Device model: Firmware for 70mai Pro and 70mai Dash Cam 1S Model name is on the case or in the Settings menu → About the device.
• 🔗 Current firmware version: Write it down (for example, v3.12.0_en). This will help you to roll back if the new version is unstable.

Also prepare:

• 💾 MicroSD card up to 32 GB (formatted in FAT32). Larger maps may not be recognized.
• 🖥️ Computer with card reader (for manual firmware).
• 📱 Smartphone with Mi Home app or 70mai (air-refresh).

⚠️ Note: Firmware from third-party developers (for example, from the forum) 4PDA) It may contain hidden features such as disabling the speed limit or Russification, but it is not guaranteed. 70mai.

Method 1: Automatic update via application

The easiest method is to upgrade through the air (OTA) through a proprietary app, which is suitable for most models except the outdated ones (for example, the 70mai Midrive D01 2018).

Instructions:

1. Connect the registrar to Wi-Fi (via the Settings menu → Networks or the smartphone hotspot).
2. Open the Mi Home or 70mai app and find your device in the list.
3. Go to the Device Settings section → Update of the PO.
4. If a new version is available, click Update and wait until it is completed (the registrar will reboot automatically).

Advantages of the method:

• ✅ Does not require a computer or SD-map.
• ✅ Minimum error risk (firmware checked for compatibility).
• ✅ User settings (resolution, G-sensor, etc.) are saved.).

⚠️ Note: If the registrar after the update began to slow down or does not save the video, reset the settings to the factory through Settings → Recovery and reset, which most often solves the buggy firmware problem.

💡

Automatic updates via the app are the safest way, but require a stable internet connection and a compatible registrar model.

Method 2: Manual update through SD-map

If OTA-Update is not available (for example, due to an old version of the software) or you want to install custom firmware, use this method. 70mai A500S MiVue 798.

Step-by-step:

1. Download firmware from the official website (file in.bin or.fw format). 70mai Pro current version — v3.15.0_20260510.bin.
2. Format MicroSD in FAT32 (use the SD Formatter tool to avoid errors).
3. Place the firmware file in the root of the memory card (not in the folders!) You can't rename the file!
4. Put the card in the recorder, plug it into the power, and the device automatically detects the firmware and prompts you to upgrade.
5. Confirm the update with OK (or Menu, depending on the model) and it takes 3-5 minutes.

If the registrar does not respond to the firmware file:

• 🔄 Check the file name (should match the manufacturer's instructions, for example, fw_update.bin).
• 📁 Make sure there are no other files on the card (especially videos or photos).
• 🔌 Try another power supply (some registrars are not updated from the USB-port).

Download the official firmware from the Xiaomi website|Format the map in FAT32|Place the file in the root of the card (without folders)|Check the file name (for example, fw_update.bin)|Connect the registrar to a stable power source-->

Method 3: Firmware via USB-OTG (for advanced users)

Some models, for example, 70mai A800 MiVue 796 supports the firmware through USB-OTG-This is a useful method if you use cable. SD-card is not recognized or recovery is required after failure.

What you need:

• 🔌 USB-OTG-cable (Type-C or Micro-USB, depending on the model).
• 💻 Computer with drivers installed (Mi may be required for Windows) PC Suite).
• 📁 Firmware in.bin format (for USB-Firmware often requires a special version of the file).

Instructions:

1. Connect the registrar to the computer through OTG-cable.
2. Press the Reset button (usually located next to the power connector) and hold for 10-15 seconds until the device goes into firmware mode (the indicator will flash yellow).
3. Run a firmware utility (e.g. DashCam Updater for 70mai or MiFlash for MiVue).
4. Select a firmware file and press Start. Don't turn off the cable until the process is complete!

⚠️ Note: When you are running through USB model (70mai A500) They may require additional confirmation via the Menu button, and if the process is 90% frozen, don't panic, it's normal for some versions of the software.

Castom firmware: risks and opportunities

In addition to the official updates, there are alternative firmware from enthusiasts for Xiaomi registrars, which add features like:

• 🎥 Increased bitrate of video (up to 60 Mbit / s instead of the standard 30 Mbit / s).
• 🔊 Shutting down voice prompts.
• 📡 Supports additional Wi-Fi frequencies (e.g. 5GHz).
• 🌐 Full Russification menu (relevant for the "Chinese" versions).

Where to look for custom firmware:

• 🛠️ Forum 4PDA (section 70mai mivue).
• 🌍 GitHub (repositories like Xiaomi-dashcam-firmware).
• 📥 Telegram channels (e.g. Xiaomi DashCam Mods).

Risks of using custom firmware:

💡

Before installing custom firmware, back up the current version! config.bin s SD-Registrar cards (it contains camera settings).

Solving typical firmware errors

Even if you follow the instructions, you can have a problem, and let's look at the most common problems and their solutions.

1. The registrar is not activated after firmware ("brick")

• 🔌 Connect the device to power and hold the Reset button for 20–30 seconds.
• 📁 Repeat the firmware through SD-Map with the previous version of the software (download it in advance!).
• 🖥️ For models on the Ambarella processor (for example, 70mai A800) Can help with the AmbaFirmwareTool utility.

2. The firmware freezes by 0% or 100%

• 🔄 Check the integrity of the firmware file (compare hash) MD5 original).
• 💾 Try another one. SD-card (preferably of class 10).
• 🔋 Connect the recorder to another power source (some power supplies don't provide enough current).

3. After the upgrade, there is no sound or Wi-Fi is not working

• 🔊 Reset the settings to factory (Settings) → Recovery and discharge).
• 📶 Check the region in Wi-Fi settings (some firmware resets it to "China").
• 🔄 Reflash the device again (the file may have been corrupted when downloaded).

Removing the firmware to the previous version

If the new firmware was unstable (for example, artifacts appeared in the video or the recorder began to overheat), you can return the old version.

1. Find the archive firmware on the official website or forums (for example, a theme on 4PDA).
2. Place the rollback file (usually has a name) downgrade.bin) on SD-map.
3. Insert the card into the registrar and hold the Menu button when you turn on (to enter Restore mode).
4. Confirm the rollback in the menu (some models will require the code 1234).

Important:

• 🔙 Recoil is not possible on all versions (manufacturer can block downgrade).
• 📵 After rollback, all settings will reset (including camera calibration and G-sensor settings).
• ⚠️ On some models (MiVue 798), rollbacks result in a reset of the serial number, which can cause problems with the app.

FAQ: Frequent questions about Xiaomi registrar firmware