Owners of smart equipment often face situations where the device stops responding correctly to commands, freezes or refuses to connect to the home Wi-Fi network. Xiaomi Vacuum Cleaner 1s is a popular model that is also not immune to software failures that require intervention in system files.
Xiaomi Mijia Vacuum Cleaner 1s recovery process differs from the standard update via the Mi Home app. If the automatic method doesn’t work, you’ll have to use a computer, special cable and utilities to directly record data in the robot’s memory. In this article, we’ll go through all the stages of preparation, connection and the firmware process itself so that you can bring your gadget back to life.
It is worth noting that any manipulation of the software carries risks. Wrong actions can lead to a complete failure of the device, so strictly follow each step of the instructions. Before starting the procedure, make sure you have a stable internet connection and a serviceable one. USB-A cable that can transmit data, not just charge the battery.
Preparation of equipment and software
The first step is to assemble the tools you need, and you're going to need a robot vacuum cleaner, preferably with a battery at least charged. 50-60%. A special connection to the computer will be required. USB-It is important to understand that standard charging cables often do not have soldered data lines, so finding the right cord can be the first task.
At the software level, you will need to find an up-to-date firmware version for a specific model Xiaomi Vacuum Cleaner. 1s. Firmware files usually have the extension.pkg or.bin and must be placed in the root directory of the flash drive or in the folder specified in the instructions for the utility. UART-USB Adapter if you plan to use the method of direct connection to the board.
⚠️ Note: Use firmware from other models, for example, from Xiaomi Vacuum Cleaner E or Roborock S5, This will cause permanent damage to the controller, and it will be impossible to restore the device by software.
To work with the file system of the robot, specialized software such as Vacuum Cleaner Flasher or similar utilities from enthusiasts is often used. Make sure that the antivirus software on your computer does not block the operation of these programs, since they interact with the system ports at a low level.
- 🔌 USB-Data cable (Data cable)
- 💻 Computer with Windows and Administrator Rights
- 📦 Up-to-date firmware file for Xiaomi Vacuum Cleaner 1s
- 🔧 Utilities for firmware and necessary drivers
Connection methods and diagnostics of the device
There are several ways to initiate the firmware process, and the choice of method depends on the current state of your Xiaomi Vacuum Cleaner 1s. If the robot turns on, makes sounds and at least partially responds to buttons, you can try the upgrade method via Wi-Fi with a DNS swap or local server. However, if the device is dead or in a cyclical reboot, you will need a physical connection to the contact areas on the case or board.
Physical connectivity often requires removing the top cover of the device. Carefully unscrew the screws hidden under rubber legs or decorative elements. On the board, you will find contact groups labeled TX, RX and GND. To communicate with the computer, a UART-USB adapter is used that connects to these contacts. It is important not to confuse TX and RX: transmitting line of one device should go to receiving line of another.
Diagnostics also include checking device logs, and if you can connect via SSH or console port, review system logs for write errors or file system damage to help you understand whether a full reset or a system partition overwriting is sufficient.
- 🔍 Visual inspection of the fee for oxidation or damage
- 📡 Check the visibility of Wi-Fi module in the list of networks
- 🔌 Testing the response to the connection of the charger
Step-by-step instructions for firmware through PC
Let's look at the basic algorithm for forced firmware. USB-If you're going to cable to the corresponding contacts on the robot board and the computer, run Windows Device Manager. Make sure the system has identified a new device, it's usually displayed as USB Serial Device or similar name with number COM-Remember this number, it's going to be used to set up the software for the sewer.
Run the firmware program and select a previously defined COM-In the settings, specify the connection speed (Baud Rate), which is for Xiaomi Vacuum Cleaner 1s It's often 115200 or 921600 baud, depending on the bootloader version. Upload the firmware file to the program interface. Before you start, press the start button in the utility, and then plug the power into the robot or press the power button to initiate the download.
☑️ Checklist before running firmware
The progress bar will show status as you record it. Don't interrupt the process or move the wires. Once you've finished recording, the program will report success. Turn off the cable, assemble the case, and try to start the device in the usual way. The first turn on may take longer than usual, as the system is being set up in the first place.
What to do if you are 99% frozen?
Version compatibility table and error codes
When working with software, it is important to understand which version of firmware is suitable for your device. Below is a table with the main versions and their characteristics. Pay attention to the release date and file size to ensure the integrity of the downloaded firmware.
| POS version | File size | Release date | Status |
|---|---|---|---|
| 3.3.9_001824 | 45.2 MB | 2021-05-12 | Stable. |
| 3.5.1_002150 | 48.7 MB | 2022-01-20 | Recommended |
| 3.5.8_003420 | 51.0 MB | 2023-03-15 | Beta. |
| 4.0.0_004102 | 54.5 MB | 2026-06-01 | Testing |
Also, when you're running a firmware or operating, you might encounter error codes that are indicated by a voice module or an LED indicator. For example, 0x04 often indicates a problem with the wheel, but when you're firmware it can signal a driver conflict. 0x0B may indicate a gyroscope damage that you can't software fix.
⚠️ Warning: If the robot reports an unknown error after firmware, or if it is constantly in charge mode without being removed from the base, the calibration of the sensors may have been disrupted.
Resolving problems during updating
One of the common problems is when the computer can't see the device. CH340 or CP2102, which are used by most UART-Adapters. Try them. USB-port, preferably USB 2.0, since ports USB 3.0 sometimes causes compatibility issues with older data protocols. Also make sure that the contacts on the robot board are securely oxidized.
If the firmware is successful but the robot is not connected to Wi-Fi, the problem may lie in the server region. Xiaomi Vacuum Cleaner 1s can be blocked from working with servers in a certain region, in which case it helps to change the region in the Mi Home application or use modified versions of applications that allow you to choose any server.
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Use insulation tape or magnetic holders to lock wires during firmware, which will prevent the contacts from accidentally shutting down at a critical time of data recording.
There are cases when the room map stops working after the update, because the new version of the software may use a different algorithm for building the map, try to reset the map completely through the application or reset button on the case, and then rescan the room in mapping mode.
- 🔄 Driver verification COM-port-over
- 🌐 Shift. DNS-servers on the router to bypass the locks
- 🧹 Cleaning sensors and wheels before re-scanning
Setup and testing after firmware
Once the new software is successfully installed, you need to make an initial setup. Connect the robot to a 2.4GHz Wi-Fi network. Make sure the network does not use hidden SSIDs and complex enterprise-level authorization methods, as Xiaomi appliances do not work with them. Go to the application and check the firmware version in the device settings - it must match the one you just installed.
Run a test run. Run the cleaning for a short time and follow the robot's behavior. It should skirt around obstacles correctly, stay focused, and return to base. Pay attention to the side brush and the main turbobrush, they should rotate at a normal speed. If you hear any noise, check if the motor bearings are clogged.
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Successful firmware is not just a file installation, but a comprehensive check of all device systems in various modes of operation.
You should also check virtual walls and exclusion zones if your model supports these functions. Create a virtual wall in the app and launch the robot into that zone. If it rotates correctly and travels around the restricted area, then the navigation algorithms work properly.