How to update the firmware on the router Xiaomi Mi Router 3: all ways + error solving

Xiaomi Mi Router 3 remains a popular choice due to its stable operation, support for Mesh networks and low price. However, over time, even a reliable device requires a firmware update: the manufacturer releases security patches, optimizes performance and adds new features. For example, in recent versions of the software, improved support for IPv6, optimization for game consoles and fixing vulnerabilities discovered in 2023-2026.

You can update Mi Router 3 in three ways: through the web interface, the Mi Home app or manually through SSH. But each method has nuances: automatic updates sometimes “hang” during the verification phase, and manual firmware requires care not to turn the router into a “brick.” In this article, we will discuss all the ways with step-by-step instructions, error warnings and tips on how to avoid typical problems.

Important: If your router is released before 2019, check the model for compatibility with the latest firmware.Some early Mi Router 3 revisions (marked R3D) do not support updates after version 2.28.XX. How to check this - read the manual firmware section.

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

Before you update your firmware, follow a few mandatory steps to avoid crashes and loss of settings:

🔌 Connect the router to an uninterruptible power source. Even a brief power outage during an upgrade can damage the bootloader.
📶 Disconnect all customers from Wi-Fi except the device you upgrade from, which will reduce the load on the router's processor.
🔄 Make a backup of settings through Settings → Additionally. → Backup/Restore. Save the file to your computer.
🌐 Check the current firmware version. Go to Settings. → Status. → If the version is newer than Xiaomi’s, no update is required.

Pay special attention to the power channel. Mi Router 3 is sensitive to voltage surges, so if you have frequent light outages in your area, use a UPS (uninterruptible power supply) or battery carrier. Otherwise, the risk of “bricking” the device increases to 30%.

⚠️ Note: If your router was purchased in China (version) CN), Do not install firmware for the global version (Global) and vice versa, this will cause Wi-Fi to fail or the device to fail completely.

📊 How often do you update your router firmware?

Once a month

Only in critical errors

Never updated.

I don't know how to do that.

2. Method 1: Automatic update via web interface

The easiest and most secure method is to update via the browser, which is suitable for most users if the router is connected to the Internet and there are no locks on the part of the provider.

Instructions:

Connect your computer or smartphone to the router network via cable (recommended) or Wi-Fi.
Open your browser and type in 192.168.31.1 (or miwifi.com).
Go to the Settings section → Update the firmware.
Click Check Updates. If a new version is available, click Update.
Wait until the process is complete (usually 3-5 minutes).

If the Update button is inactive or there is an error "No connection to the server", try:

🔄 Reset the router (reset button for 10 seconds).
🌍 Change. DNS-server WAN 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).
🕒 Try again in 1-2 hours (Xiaomi servers are sometimes overloaded).

Connected to the router via cable

Backup copy of settings saved

DNS-servers verified (8.8.8.8 or 1.1.1.1)

No active downloads/streaming videos

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⚠️ Warning: If the router doesn't turn on after the upgrade (all indicators are on or orange flashes), don't panic. Turn off power for 30 seconds, then hold the Reset button for 15 seconds. This will reset to factory settings, but will keep the firmware running.

3. Method 2: Update via the Mi Home app

The Mi Home mobile application allows you to update the firmware remotely, but has limitations: it works only with global versions of the router (Global) and requires a stable Internet connection on a smartphone.

Step-by-step:

Install the Mi Home app from Google Play or the App Store.
Add the router to the app (if not already added): click + → Add the device → Router.
Select your Mi Router 3 from the device list.
Go to Settings → Update firmware.
If a new version is available, click Update and confirm the action.

The advantage of this method is notifications about new versions of the software.

❌ The app often does not see routers with Chinese firmware (CN).
❌ Mobile Internet Update May Be Terminated Due to Traffic Restrictions.
❌ There is no way to revert to the previous version.

💡

If Mi Home does not find the router, try changing the region in the application profile to "Russia" or "Singapore". To do this, type 5 times on the top left corner in the user profile.

Method 3: Manual firmware via SSH (for power users)

If the automatic update doesn’t work or you need a specific firmware version (e.g., OpenWRT), you can manually flash the router through SSH. This method is risky, but gives you complete control over the process.

Requirements:

🖥️ Computer with Windows/Linux/macOS and established by PuTTY (or similar) SSH-client).
🔌 Ethernet Cable to Connect to a Router.
📁 Firmware in.bin format (download from the official Xiaomi website).

Instructions:

Connect your computer to the router via cable.
Turn on SSH on the router: Go to the web interface (192.168.31.1). Go to Settings → Additional → SSH. Activate access over SSH and save settings.
Connect to the router via PuTTY: Host Name: 192.168.31.1 Port: 22 Login: root Password: admin (or your current password from the web interface)
Download the firmware to the router: cd /tmp wget http://bigota.miwifi.com/xiaoqiuang/rom/r3/miwifi_r3_firmware_XXXX_2.XX.XX.bin (substitute XXXX current-age).
Install firmware: mtd write /tmp/miwifi_r3_firmware_XXXX_2.XX.XX.bin firmware
Wait until the router is finished (the router will restart automatically).

⚠️ Note: If the error "Could not open mtd device: firmware" appears after mtd write, then your router model does not support manual firmware through the SSH. Try an alternative method using TFTP (spoiler).

Alternative Firmware Method via TFTP

If SSH It does not work, you can run the router through TFTP emergency: 1. Turn off the router. 2. Press the Reset button and connect the power (hold on). 10 seconds). 3. Run it on your computer. TFTP-client, tftpd64) And point the way to the firmware. 4. Assign a network adapter IP 192.168.31.2/24. 5. Turn on the router - it will automatically download the firmware from TFTP-server.

5. firmware compatibility table for Xiaomi Mi Router 3

Not all firmware is suitable for your router revision, and the table below shows the compatible versions:

Model/Audit	Supported versions of firmware	The Last Stable Version (2026)	Notes
Mi Router 3 (R3)	2.18.XX – 2.30.XX	2.30.51	Standard global version
Mi Router 3 (R3D)	2.18.XX – 2.28.XX	2.28.123	Chinese version does not support new firmware
Mi Router 3 (R3P)	2.20.XX – 2.30.XX	2.30.51	It's only stitched through SSH.
Mi Router 3 (R3G)	2.22.XX – 2.30.XX	2.30.51	Supports Mesh networks

Important: If your router is marked R3D (usually indicated on the sticker below), do not install firmware newer than 2.28.123.

6.Typical update errors and their solutions

Even if you follow the instructions, you can have problems.

🔴 Error: "Failure to download firmware" Reason: Xiaomi servers are inaccessible or blocked by the provider. Solution: change DNS on 8.8.8.8 or download the firmware manually from the official website and download through SSH.
🔴 Error: "False version of firmware" Reason: trying to install firmware for another model (e.g. Mi Router 4). Solution: check the model on the router sticker and download the correct version.
🔴 Error: router does not turn on after update Reason: interrupted firmware process or incompatible version Solution: perform reset to factory settings (Reset button 15 seconds) or run through TFTP (see spoiler above).
🔴 Error: after the update there is no Internet Reason: the settings are lost WAN (Solution: Go to Settings. → Internet and reconnect the connection.

💡

If the router flashes orange after a failed update and does not respond to the ping, do not try to flash it again. First, perform a factory reset (15 seconds Reset), then repeat the procedure.

7. How to roll back on a previous firmware version

If you have a bug after the update (for example, Wi-Fi falls off or Internet slowdown), you can return the old firmware.

Download the desired version of the firmware from the archive of Xiaomi.
Connect to the router via SSH (see section 4).
Upload the firmware to /tmp:
Set it up with a command:
Wait for the reboot (5-7 minutes).

Important: rollbacks are only possible within a single firmware branch, such as 2.30.XX to 2.28.XX, but not 2.18.XX. Trying to install an too old version will lead to an error called "Invalid firmware".

Frequently Asked Questions (FAQ)

Can I upgrade Xiaomi Mi Router 3 without losing my settings?

Yes, if you automatically update via the web interface or Mi Home, the settings will remain. However, we recommend backing up through Settings → Additional → Backup.

What if the router does not give out Wi-Fi after the upgrade?

Try: Reboot the router (power button or Reset for 5 seconds). Reset the Wi-Fi settings to Settings → Wi-Fi. Reverse to the previous firmware version (see section 7). If it doesn't help, check if the router region (should be Russia or Global) is lost.

How do I know what kind of router revision I have (R3, R3D, R3P)?

Turn the router over and look at the sticker. The model is listed in Mi Router 3 XXX format, where XXX is revision. You can also check using SSH command: cat /proc/cpuinfo | grep "machine" Output will contain a model, for example: Xiaomi Mi Router 3 (R3D).

Can I flash Xiaomi Mi Router 3 with an alternative firmware (OpenWRT, Padavan)?

Yes, but it voids the warranty and requires experience with SSH and TFTP. There are informal OpenWRT builds for the Mi Router 3, but they may not support all features (e.g. 5GHz Wi-Fi). 4PDA OpenWRT.

How long does it take to update the firmware?

Depending on method: Automatic update: 3-5 minutes. Mi Home: 5-10 minutes (depending on internet speed); Manual firmware via SSH: 5-15 minutes (including reboot); If the process is delayed by more than 20 minutes, interrupt it (turn off power) and try again.