Owners of the popular Xiaomi Mi Router 4 (R3G v2) router often face the limitations of standard firmware. The Chinese version of the software may have a stripped-down functionality, and the global version does not always receive timely security updates or support for new protocols, which is why the question of how to reflash the device becomes relevant for home network enthusiasts.
Replacing stock software with OpenWrt makes it possible to turn a regular router into a powerful networking tool, you get access to thousands of packets, you get the ability to fine-tune VPNs, parental controls, and traffic management, but it takes care, because downloading a device is a critical operation.
In this article, we will take a detailed look at the entire path from preparing a computer to the final configuration of an alternative operating system. You will learn how to bypass the manufacturer's locks and install a stable version of the software. The main thing is to strictly follow the algorithm of actions so as not to turn the equipment into a "brick".
Preparation of equipment and software
Before you start any manipulation of the router software, you need to make sure that all the required components are available. You will need the Xiaomi Mi Router 4 router itself, a computer with a LAN network port and an Ethernet cable. Without a wired connection to the port, usually painted blue, you can not start the process.
You also need to download a specific firmware file, often called a patch or breed, which is a bootloader that allows you to install third-party software. Files must be downloaded from trusted sources, as a damaged image can disrupt the memory chip.
☑️ Firmware preparation
It is important to disable all unnecessary network adapters on the computer so that conflicts do not arise. IP-The Wi-Fi adapter on the laptop is better temporarily deactivated, leaving only a wired connection, which will eliminate errors in the transmission of data during the flashing process.
Unlock the bootloader and enter the recovery mode
The standard procedure for entering recovery mode requires a sequence of actions: first, the router must be turned off from the outlet, then, holding the Reset button (usually a small hole on the back), you need to apply power.
Hold the button for a while. 5-10 So, you're going to have to go back to the moment, and then you're going to have a flash of orange or yellow, and that's a signal that the device has gone into Recovery mode, and then you're going to release the button, and the computer that's connected to the blue port with the cable is going to get it. IP-address.
⚠️ Warning: If the indicator is always on blue, it means that the recovery mode is not activated. Try repeating the procedure by changing the retention time of the reset button.
Open the browser and enter in the address bar IP-The bootloader address is usually 192.168.1.1. If a page with the Breed logo or similar interface does not open, check the network adapter settings. IP-The computer address must be automatically received or manually written in the range 192.168.1.x.
What to do if the page is not loaded?
Installation of patch and firmware OpenWrt
After successfully logging into the bootloader interface (Breed), you will see a menu with several options, we are interested in the Firmware section or "Firmware", where you need to select the file you downloaded earlier (for example, breed-mt7621-xiaomi-mir4g-128m.bin), and upload it to the device memory.
Once the patch is loaded, the router will restart. Now you need to re-enter Recovery mode, but using the new bootloader. The interface may look different, but the principle remains the same: select the main OpenWrt firmware file (file with the extension.bin or.squashfs).
During the recording, the progress bar will show the status of the operation, it is strictly forbidden to interrupt the power or remove the cable at this point, even a short-term failure can damage the memory parts, after which recovery will be possible only through the programmer.
When the process is complete, the device will go into reboot. The indicators can flash randomly for a while. This is normal behavior, as the system initializes new configuration files and configures network interfaces.
Primary network configuration and access to the interface
After installation of OpenWrt IP-The router's address changes frequently. The default new address may be 192.168.1.1, but some builds use 192.168.10.1 or another range. Check the gateway in your computer's network connection settings to find out the current address.
Enter the resulting IP in the browser. You will see the welcome window of LuCI, the OpenWrt web management interface. The standard login is usually root, and the password field in the first versions is often left empty or using a root combination.
| Parameter | Default value | Recommended action |
|---|---|---|
| IP-address | 192.168.1.1 | Change to unique |
| Login. | root | Leave or change |
| Password. | (empty) | It is necessary to establish |
| Wi-Fi | Unplugged. | Set up a name and key |
Immediately after logging in, it is recommended to change the administrator password, which is a basic level of security that will protect your network from unauthorized access. Never leave a router with open access to the control panel.
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Changing your password and updating your Wi-Fi configuration are the first steps after successfully installing OpenWrt. Without that, the network remains vulnerable.
Configuring wireless connection and expanding functionality
In Xiaomi’s stock firmware, Wi-Fi settings are limited to basic settings. OpenWrt provides access to advanced settings. In the Network section -> Wireless, you can configure channel width, signal power, and encryption standards.
For the 2.4 GHz band, it is recommended to use a 20 MHz channel width in noisy ether or 40 MHz for top speed. For 5 GHz, more free channels are available, which provides a stable connection for streaming and gaming.
One of the main features of a re-flashed router is the installation of additional packages. Through the System -> Software menu, you can update the lists of repositories and install the necessary utilities, these can be VPN clients, torrent rockers or ad blocking systems.
⚠️ Note: Before installing a large number of packages, make sure that the device has enough free memory.The Mi Router 4 model has a limited amount of storage. RAM, Overcrowding can lead to unstable work.
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Use the AdBlock or AdGuard Home plugin to block ads at the network level, which will speed up the loading of pages on all connected devices, including smartphones and Smart TVs.
Possible problems and ways to solve them
In the process of experimenting with firmware, users may encounter various errors, the most common problem is a bootloop, where the router constantly restarts, which may indicate incompatibility of the kernel version or damage to the file system.
If the router is not pinging or entering the web interface, try resetting to factory settings via the Reset button (hold more than 10 seconds when power is turned on). In some cases, flashing through the UART console helps, but this requires disassembling the case and having a USB-TTL adapter.
Wi-Fi speed problems are often solved by choosing the right region and channel. Automatic selection is not always efficient.Use the Wi-Fi analyzers on your smartphone to find the least loaded frequency range for your router.