The modern Xiaomi AX3600 router has impressive hardware: a powerful Qualcomm IPQ8072A processor, Wi-Fi 6 support and gigabit ports. However, the regular software often limits functionality for advanced users, not allowing you to fine-tune the network or install specialized scripts, which is why the device’s firmware is becoming a popular solution for enthusiasts who want to squeeze the most out of the equipment.
The process of replacing the operating system requires careful and strict adherence to the algorithm of actions. Errors in the preparation stage can lead to complete inoperability of the gadget, turning it into a "brick". In this article, we will discuss in detail the preparation for modification, the process of installing alternative firmware and the initial configuration of the system.
Before you start active, you need to make sure that you have a stable wired connection to the computer. Wireless connection during critical operations is unacceptable because of the risk of losing data packets. Backing up current settings is also a smart step, although a full copy of the regular firmware without root rights is not possible.
Preparation of equipment and software environment
The first step is to assemble the tools you need, you need a computer with a Windows, Linux or macOS operating system, and you need a working Ethernet cable, and you can't use a wireless firmware connection because any break in communication will interrupt the process of writing data to the device's memory.
To work with the command line and remote access, you need to install specialized software. SSH-client, such as PuTTY or the built-in terminal in Linux/macOS. It is also recommended to download drivers for a network card if they are not installed by default in your OS.
- 📡 Ethernet cable (twisted pair) for direct connection to the router.
- 💻 PC or laptop with configured network interface.
- 🔌 Router power supply (make sure it provides stable voltage).
- 💾 Firmware files downloaded from verified sources (OpenWrt, Padavan).
It is important to check the hardware version of your device. There is a sticker at the bottom of the Xiaomi AX3600 case, but sometimes revisions can differ with internal flash memory components. Using firmware that is not designed for a specific revision of the board can lead to irreversible consequences.
⚠️ Note: Using third-party software removes the device from the manufacturer's official warranty.
☑️ Ready to flash
Unlock the bootloader and access via SSH
The MIWiFi firmware has a closed bootloader that blocks the installation of unlicensed software. The first stage of the modification is to obtain superuser rights (root) and activate the Telnet or SSH service. This opens access to the router's file system.
There are several ways to activate a Telnet server, and the most common way is to exploit a vulnerability in the web interface or use a special script through the command line of a PC, and once you successfully exploit the vulnerability, you can log in with administrator privileges.
Use standard login credentials if they have not been changed during activation. Often the root login and password are different from those used to log in to the web interface. Changing the password immediately after access is a mandatory security measure.
Once accessed, you need to back up the mtd partition containing the calibration data of the Wi-Fi modules, and losing this data will cause wireless interfaces to fail, and it will be extremely difficult to recover them without a dump from another identical device.
What to do if Telnet is not turned on?
Choosing an alternative firmware
The alternative operating system market for routers offers several options, each with its own advantages, depending on your goals: whether you want maximum stability, advanced functionality or specific routing features.
The most popular is OpenWrt. It is a full-fledged Linux-based operating system that provides huge customization capabilities. For the Xiaomi AX3600, there are stable builds that support all hardware components, including Wi-Fi 6 radio modules.
Other options, such as Padavan or DD-WRT, may offer a simpler interface or specific features, but support for the new Wi-Fi 6 hardware is often limited or in beta testing.
| Parameter | Staff MIWiFi | OpenWrt | Padavan |
|---|---|---|---|
| Interface. | Simplified, mobile | LuCI (web), CLI | Classic Web |
| Support for Wi-Fi 6 | Complete. | Full (driver) ath11k) | Partial/Experimental |
| Extensibility | Limited. | Huge (options) | Medium |
| Difficulty | Low. | Tall. | Medium |
When choosing a firmware version, pay attention to the build date. For the Xiaomi AX3600, it is critical to use fresh Linux kernels and ath11k drivers, as early versions may have experienced problems with temperature or connection stability at high speeds.
Process of installing a new operating system
Once you have the files prepared and accessed via SSH, you can go directly to download the new image, and there are two main methods: update via the web interface (if possible in the current version), or force the recording via the console.
The console method is more reliable. You will need to transfer the firmware file to the device using the protocol. SCP or SFTP. To do this, use a file manager that supports these protocols, such as WinSCP, specifying the file manager. IP-Router address and root credentials.
Once a file is uploaded to a temporary directory (usually /tmp), a command must be executed to verify the integrity of the image. Using a corrupt file will result in a recording error.
sysupgrade -v /tmp/openwrt-ipq807x-generic-xiaomi_ax3600-squashfs-sysupgrade.binExecuting the sysupgrade command initiates the process of overwriting the system partition, at which point the router indicators may start flashing in a chaotic order, it is strictly forbidden to interrupt the power supply or remove the Ethernet cable until the device is fully automatically restarted.
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Use the “logread” command in SSH during the update process if you can run a second terminal to track system logs in real time.
Initial OpenWrt setup
Once the router is successfully restarted, it will create a new Wi-Fi network with an open access or default name. LAN-Port to log into the web interface. By default, the gateway address often changes to 192.168.1.1.
When you first log in to the LuCI interface, the system will require you to set a password for the root user, which will activate the firewall and close access to settings from the external network. Do not ignore this step, otherwise your router will remain vulnerable to attacks from the local network.
The next step is to set up WAN-interface to connect to the Internet service provider, depending on the type of connection (PPPoE, Dynamic IP, Static IP) Enter the data provided by the provider. for Xiaomi AX3600 It is also important to properly configure the Wi-Fi region to comply with the statutory signal power regulations.
- 🌐 Setting up WAN: data entry PPPoE or DHCP.
- 🔒 Set up an administrator password and set up a Firewall.
- 📶 Configuration of wireless networks (SSID, encryption WPA3).
- ⏱ Synchronizing time through NTP-server.
Wi-Fi 6 may require additional packages to be installed through the Options Manager opkg. OpenWrt repositories offer modules to fine-tune the channel width and transmitter power, allowing for optimised coverage in challenging environments.
⚠️ Note: When setting up Wi-Fi, don’t choose 160 MHz channels in noisy air, which can reduce overall connection stability despite theoretically higher speeds.
Possible errors and ways to eliminate them
The process of flashing complex network equipment is rarely without difficulties. One of the frequent problems is a bootloop, when the device is constantly restarting, which may indicate incompatibility of the kernel version or damage to the file system.
If the router stopped responding to ping and does not let the web interface, but the indicators are on, you may need to restore through Failsafe or TFTP mode. For the Xiaomi AX3600, the recovery method through UART often works, requiring disassembly of the case and connection to contact areas on the board.
Problems with Wi-Fi drivers can manifest as low speeds or permanent connection breaks, in which case it is worth checking the temperature of the processor. Qualcomm's powerful IPQ8072A chipset requires efficient cooling, and when flashing, the regular fan control algorithms may stop working correctly.
Use built-in resource monitoring tools to diagnose this: A high CPU load in the absence of active traffic may indicate a process conflict or an error in the configuration of NAT network rules.
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If the device went into the bootloop immediately after firmware, try booting in Failsafe mode (usually flashing the LED in special mode) and resetting the configuration with the "firstboot" command.