How to Switch a Xiaomi Router 4A English: A complete guide to error analysis

Xiaomi Mi Router router 4A (model R4A Gigabit Edition and R4A 100M The Edition comes with Chinese firmware, which not only limits functionality, but also creates problems with setting up in Russian. Many users face a lack of localization, blocking access to advanced options and even automatic updates that return the device to the factory state. In this guide, we will analyze all the current methods of firmware - from the official language switch to installing alternative firmware like OpenWRT or Padavan.

It is important to understand that the firmware process Xiaomi 4A It is different from other models (e.g. Xiaomi). 4C or AX3600) Because of the closed bootloader and the hardware platform, we'll go into detail on unlocking the bootloader, choosing the right firmware version, and recovering from failed attempts. If you've never flashed network equipment before, don't worry: The instruction is adapted for beginners, with step-by-step screenshots and an explanation of each action.

Before you start, check your router model. The sticker on the bottom panel should contain one of the following:

• 🔹 Mi Router 4A Gigabit Edition (white case, 2 antennae, port WAN/LAN 1000 Mbps)
• 🔹 Mi Router 4A 100M Edition (black case, 2 antennas, port) WAN 100 Mbps)
• 🔹 Mi Router 4A (International – if you have this version, no firmware in Russian is required!

If your router is International, but the language is still Chinese, the problem lies in the region of your Mi Account account, in which case, just change the region in your account settings - the instructions are given in the last section of the article.

1. Firmware Preparation: What to Do Before Starting

Incorrect preparation is the main reason for the router to “brick” (turn into a “brick”). Before you start firmware, follow the following steps:

Download the correct version of the firmware for your model|Install drivers for router (if required)|Prepare an Ethernet cable and a computer|Make a backup of current settings|Disable Antivirus and Firewall

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The first thing you need to do is to determine the current firmware version.

1. Connect to the router via Wi-Fi or cable.
2. Open your browser and go to 192.168.31.1 (or miwifi.com).
3. Enter the login/password (by default — admin/sticker).
4. Move to the → firmware version (or Status) → Firmware Version).

If the firmware version starts with 2.XX.XX — You have old firmware, and you can update it through the web interface. 3.XX.XX or higher, you'll need to unlock the bootloader. 1.XX.XX They are very rare and usually point to custom firmware.

⚠️ Note: If your router was purchased after 2022, there is a high probability that it is a blocked bootloader, in which case the official firmware through the web interface will not help - you will need to unlock through the Internet. SSH Telnet.

Also prepare:

• 🖥️ Windows computer 7/10/11 Linux (some methods require Python) 3.x).
• 🔌 Ethernet cable (Wi-Fi connection is unstable for firmware!).
• 📁 Backup of settings (export through Settings) → Additionally. → Backup).
• ⚡ Uninterruptible power supply (if the light is turned off during firmware, the router may fail).

Method 1: Official change of region (without unlocking)

The easiest method is to change your account region through the Mi WiFi app, which works if:

• 🔸 The router is not blocked (no link to the Chinese account).
• 🔸 The firmware version is not newer 2.28.XX.
• 🔸 You have access to the Chinese Mi WiFi app (or its modified version).

Instructions:

1. Download and install the Mi WiFi app (version 5.5.3 or lower).
2. Register a new Xiaomi account with the region of Russia or Singapore (via the website) VPN, if required).
3. Connect to the router and in the application go to Settings → General. → Region.
4. Choose Russia or Global and confirm the change.
5. Restart the router - after turning on the interface language will change to Russian.

If this method does not work, try updating the firmware through the web interface:

1. Download the official firmware for your model (file with the.bin extension).
2. In the router web interface (192.168.31.1) go to Settings → Update of the PO.
3. Download the downloaded file and wait for the process to complete (about) 5-10 minute).

⚠️ Note: After updating via the web interface, the router can return the Chinese language if the account is linked to China, in which case you will need a complete flashing with unlocking the bootloader.

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If the router requests a password from a Chinese account after changing the region, try resetting it to factory settings (reset button for 10 seconds).

3. Method 2: Firmware through SSH (loader-free)

If the official methods don’t work, you’ll have to unlock the bootloader and flash the router manually, which is suitable for all Xiaomi versions. 4A, including new ones with locked loader.

The work will require:

• 🔧 PuTTY (for Windows) or Terminal (Linux/Mac).
• 📡 Padavan or OpenWRT firmware (you can download it on the Internet) 4PDA).
• 🔑 Unlockable script (hack.sh or unlock.sh).

Step-by-step:

Step 1: Inclusion SSH-access

1. Connect the router to the computer via Ethernet (port) LAN).
2. Open your browser and go to 192.168.31.1.
3. In the address bar, replace 1 on cgi-bin/luci (full-time: 192.168.31.1/cgi-bin/luci).
4. If the page with fields for entering is opened, enter the login / password (root and password from the sticker).
5. Go to System. → Administration → SSH Keys and enable access.

If the page /cgi-bin/luci It does not open, use an alternative method:

1. Open the command line (Win + R → cmd).


2 Enter:




telnet 192.168.31.1




3 If the connection is established, enter the username/password (default: root/ password from the sticker).




4. Follow the command:




nvram set ssh_en=1




nvram commit




reboot

Step 2: Unlocking the bootloader

After inclusion SSH connect to the router via PuTTY (or terminal) and execute:

cd /tmp


wget http://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-xiaomi_mi-router-4a-gigabit-squashfs-sysupgrade.bin




mtd write openwrt-*.bin firmware




reboot

If the router does not load after this command, use emergency mode:

1. Turn off the router.
2. Press the Reset button and, without letting go, connect the power.
3. Hold the button. 10-15 seconds until the indicator starts flashing orange.
4. Connect to Ethernet and repeat the firmware through TFTP.

4. Method 3: Installation of custom firmware (Padavan/OpenWRT)

Custom firmware, such as Padavan or OpenWRT, give full control of the router: support VPN, AdBlock, advanced Qos settings and more, but installing them requires an unlocked bootloader.

Comparison of firmware:

For the installation of Padavan:

1. Download the firmware with 4PDA (Choose the version for Mi Router 4A Gigabit or 100M).
2. Connect to the router on SSH and do: cd /tmp Wget [link to firmware] mtd write padavan.bin firmware reboot
3. After the reboot, the router will be available at the address 192.168.123.1 (login: admin/admin).

For OpenWRT, the procedure is similar, but after firmware, you will need to install the packages:

opkg update


opkg install luci-i18n-russian

⚠️ Note: Padavan firmware may conflict with some Xiaomi models 4A, Pre-installing, check compatibility on the forum before installing. 4PDA OpenWRT.

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Custom firmware gives you more features, but it doesn't guarantee you, and if you have a router that's guaranteed, try the official language change methods first.

5.Router Recovery After Failed Firmware

If the router stops turning on, flashes orange, or doesn't respond to commands, don't panic. In 90% of cases, it can be restored through emergency mode (TFTP).

Recovery will require:

• 🖥️ Windows computer.
• 📡 Programme TFTP-server, Tftpd64).
• 🔌 Ethernet Cable (connect to the port) LAN1).
• 📁 Original firmware (.bin file).

Instructions:

1. Set and run. Tftpd64.
2. In the program settings, specify the folder with the firmware and install the server IP 192.168.31.100.
3. Turn off the router power, press the Reset button and, without letting go, connect the power.
4. Hold the button. 10-15 seconds until the indicator starts to flash orange quickly.
5. V Tftpd64 You'll get a request to download the file (3-5 minute).
6. The router will automatically restart. If not, turn off and turn on the power manually.

If the router does not respond to TFTP, Try to stitch through UART (soldering iron and adapter required USB-TTL). This method is more complicated and suitable only for experienced users.

6. Frequent errors and their solutions

Even if you follow the instructions accurately, you can get errors.

• 🔴 "Invalid firmware" when downloading firmware → Download the firmware for your model (Gigabit or 100M).
• 🔴 The router does not turn on after firmware → Take advantage. TFTP-restoration.
• 🔴 No access to 192.168.31.1 → Check the network settings (IP must be automatic).
• 🔴 SSH plug-in → Turn it on via the telnet or /cgi-bin/luci.
• 🔴 Firmware interrupted at 99% → Repeat the process by disabling the antivirus.

If Wi-Fi is not working after Padavan or OpenWRT firmware:

1. Connect to the cable.
2. In the web interface go to Network → Wireless.
3. Check if the radio is on (the Enable button).
4. If not, update your drivers via opkg install kmod-mt76x2.

Critical information: On Xiaomi routers 4A, Released after March 2022, a new type of bootloader (U-Boot) can be installed that is not compatible with the old unlock methods. JTAG.

7. Alternative methods: changing the language without firmware

If you only need Russian localization and advanced features aren’t important, try these ways:

• 🌐 Change region via Mi Account: Go to Xiaomi. Change your account settings to Russia or Singapore. Reboot your router, the language can change automatically.
• 📱 Use of modified Mi WiFi application: Some versions of the application (for example, MiWiFi Unlock) allow you to force the language change without firmware. 4PDA.
• 🔄 Reverse to old firmware: If you have a version 3.XX.XX, Try to sew an older one (2.XX.XX), where language change works through the web interface.