How to reprogram the robot vacuum cleaner Xiaomi: from firmware to custom firmware

Xiaomi’s robot vacuum cleaners are not just household appliances, but full-fledged smart devices with their own software. Over time, standard features may seem limited and official updates no longer come out for older models, in which case flashing becomes the only way to bring the device back to its relevance or add new features, from improved cleaning algorithms to integration with Home Assistant or alternative maps.

However, the process of reprogramming a robot vacuum cleaner is not just the pressing of a couple of buttons. It is important to understand the types of firmware (official, modified, custom), the risks of losing warranty or “bricking” the device, as well as the nuances of working with different models – whether it is Mi Robot Vacuum-Mop 2 Pro, Dreame D9 viomi V3. In this article, we will discuss all the stages: from tool preparation to recovery from a failed firmware, with a focus on unique methods for devices based on Rockchip and Mstar chips, which are used in 90% of Xiaomi vacuum cleaners.

1.Why reflash the Xiaomi robot vacuum cleaner: the real causes and risks

Before you start flashing, you need to be clear about what you want to achieve, and here are the most common reasons why users decide to do this:

• 🔄 Previous articleOldware: Xiaomi often stops supporting older models 3-4 years, depriving them of critical security updates and new features (such as zoning or carpet recognition).
• 🚀 Advanced features: Castom firmware (such as Valetudo or DustBuilder) allows you to control a vacuum cleaner without Xiaomi’s cloud, configure complex cleaning routes, or integrate the device with a single device. MQTT smart-home.
• 🔒 Privacy: Standard software sends your home layout data to Xiaomi servers. Alternative firmware allows you to completely disable this feature.
• ⚡ Performance: Some modified firmware optimizes cleaning algorithms, reducing time 15-20% through more rational routes.

However, along with the benefits, there are serious risks:

• ⚠️ Loss of warranty: Any interference with the firmware will automatically void the Xiaomi warranty. Even if you return the official software, the service center can detect traces of changes.
• 🧱 "Bricking: A wrong firmware or interrupted upgrade process can turn a vacuum cleaner into a useless brick. N32G457 (For example, Mi Robot Vacuum 1S), where there is no hardware recovery.
• 🔌 Battery problems: Some custom firmwares miscalibrate the battery, leading to rapid wear and tear or sudden shutdowns during cleaning.

⚠️ Xiaomi Mi Robot Vacuum-Mop P and Dreame Z10 Pros have firmware protection through standard methods, requiring the opening of the case and the connection of the UART, Increases the risk of damage to the payment.

2. Preparation for flashing: tools and warnings

Before you start the process, you need to collect all the necessary tools and create backup copies.

Download official or custom firmware (check compatibility with your model!)

Install drivers for MediaTek or Rockchip (depending on the vacuum cleaner processor)

Prepare. OTG-cable or adapter for connecting to a PC

Charge the vacuum cleaner to 100% (interrupted due to battery discharge) = brick-and-mortar)

Backup of current firmware (if possible)

Disable the antivirus (it can block firmware utilities)

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Pay special attention to the choice of firmware. Official updates can be downloaded from the Xiaomi website (the support section of your model), and custom ones on forums like XDA Developers or 4PDA. For example, for Mi Robot Vacuum-Mop 2 Lite, Valetudo firmware is popular. RE, which removes cloud binding and adds support for Alice's Yandex.

Also check the hardware version of your vacuum cleaner. It is listed on the sticker under the lid or in the mobile app (Settings) → About the device → For example, Mi Robot Vacuum 1 has a version. V1, V2 and V3, And the firmware is incompatible with them!

⚠️ Note: If your vacuum cleaner belongs to the Xiaomi Mi Robot Vacuum-Mop P series (2021 In order to install the system, you need to turn off the bootloader protection through the service menu. persist.sys.allow_adb 1 through ADB, What is possible only when connected to a PC.

Official (update from Xiaomi)

Castomy (Valetudo, DustBuilder, etc.)

Modified (with Russification or new features)

I haven't decided yet.-->

3. Flashing methods: from official to extreme

There are several methods for reprogramming Xiaomi’s robot vacuum cleaner, and the choice depends on the model, your skills and goals.

3.1 Official Update via Mi Home app

The easiest and safest way is to upgrade through a proprietary app, which is suitable if you just want to upgrade to the latest version without risking losing your warranty.

1. Open the Mi Home app and select your vacuum cleaner.
2. Go to Settings → About the device → Update firmware.
3. If a new version is available, click Update and wait until it is completed (usually). 5-15 minute).

This method does not require additional tools, but has limitations: you can not install custom software or roll back to the old version.

3.2. firmware via Recovery Mode (for Rockchip models)

A more flexible method that allows you to install modified firmware. Suitable for Mi Robot Vacuum-Mop 2 Pro, Dreame D9 and other devices on Rockchip RK3308.

1. Download the firmware in.img format and rename it to update.img.
2. Place the file on the formatted file in FAT32 microSD card.
3. Turn off the vacuum cleaner, insert a card and press the Home button (or Reset, depending on the model).
4. Holding the button, connect the vacuum cleaner to charge. In 5 seconds, release it, and the refresh process will begin.

💡

If the vacuum cleaner doesn’t respond to the Home button, try pinching Spot Cleaning + Dock at the same time. It's an alternative combination for entering Recovery on some models.

3.3. Firmware through ADB (for advanced users)

The method is for those who are willing to work with the command line, allowing you to install custom firmware, debug software and even modify system files.

You'll need:

• 🖥️ Computer with drivers installed ADB and Fastboot.
• 🔌 USB-cable (preferably original to avoid connection problems).
• 📁 Firmware in.zip or.img format.

Process:

1. Put the debugging on. USB on the vacuum cleaner (through the service menu or command) ADB).
2. Connect the vacuum cleaner to the PC and check the connection command: Adb devices should appear serial number of the device.
3. Reboot the vacuum cleaner in Fastboot: adb reboot bootloader mode
4. The Fastboot Flash System: Fastboot Flash System system.img (substitute system.img on your firmware file).

⚠️ Attention: On Viomi models V2/V3 post-flip ADB To correct this, after the first switch on, put the vacuum cleaner on a flat surface and execute the command: adb shell am broadcast -a android.intent.action.CALIBRATE

3.4. Firmware through UART (power-user)

The most complex, but also the most versatile method, which works even on bricked-up devices, requires soldering and terminal operation.

You'll need:

• 🔧 Solding iron and solder (to connect to contacts) UART board-board).
• 🖥️ USB-UART adapter (e.g, CP2102 or FT232).
• 📟 Terminal (e.g. PuTTY or Screen for Linux).

Process:

1. Disassemble the vacuum cleaner and find contacts TX, RX, GND on the board (usually signed or can be found by the model scheme).
2. Connect the adapter to your contacts and computer.
3. Open the terminal with settings: speed 115200, no flow control.
4. Turn on the vacuum cleaner and interrupt the loading (usually you need to press any key in the terminal in the first 3 seconds).
5. Download the firmware through terminal commands (e.g. loadb for downloading by XMODEM).

4. Popular custom firmware for Xiaomi: comparison and opportunities

If you don't like the official software, you can look at alternative firmware, and they fall into three categories:

• 🔄 Modified official: New features added but the core remains standard (e.g. Russification or support for new maps).
• 🛠️ Open source cadastral: Completely rewritten software like Valetudo or DustBuilder that removes reliance on the Xiaomi cloud.
• 🤖 Firmware for smart home integration: Add Home Assistant support, MQTT voice-assistant.

Compare the most popular solutions:

For example, Valetudo removes the dependence on Xiaomi servers completely, which eliminates connection problems in countries where Mi Home is not officially supported. DustBuilder allows you to configure individual cleaning areas with different intensity, which is impossible with standard software.

5. Step-by-step: Valetudo firmware on Mi Robot Vacuum 2

Consider the installation process of one of the most popular custom firmware - Valetudo - on the example of Xiaomi Mi Robot Vacuum 2. RK3308 (Like, Dreame. D9).

Step 1: Preparation of tools

You'll need:

• 🖥️ Windows computer 10/11 Linux.
• 🔌 USB-cable (preferably original).
• 📁 Archive from Valetudo (download the latest version from the official website).
• 🛠️ Utilities. ADB Fastboot (you can install it via Google’s Platform Tools).

Step 2: Enabling debugging over USB

By default, debugging is disabled, so you need to activate it:

1. Install the Mi Home app and connect the vacuum cleaner to your account.
2. In the app, go to Settings → About the device → Firmware version.
3. Click on the firmware version 10 times in a row until you have become a developer.
4. Go back to the basic settings and enable debugging over USB.

Step 3: Connect to PC and install Valetudo

Now connect the vacuum cleaner to your computer and follow the instructions:

1. Open the command line in the folder with ADB and check the connection: adb devices If the device is not detected, install drivers for Rockchip.
2. Download and unpack the archive from Valetudo. install.sh.
3. Launch the installation script (in) Linux/MacOS): chmod +x install.sh./install.sh For Windows, use it. install.bat.
4. Wait until the process is completed (usually) 5-10 The vacuum cleaner will reload several times.

Step 4: Setup after installation

After a successful firmware:

1. The vacuum cleaner will create its own Wi-Fi hotspot named valetudo-XXXX.
2. Connect to it from your phone or PC.
3. Open the address in the browser http://192.168.4.1 and perform the initial setup.
4. Connect the vacuum cleaner to your home Wi-Fi network via the Valetudo web interface.

Now you can control the vacuum cleaner without the Xiaomi cloud, customize the cleaning areas manually and integrate it with the Home Assistant via the Valetudo Integration plugin.

adb shell rm /data/misc/wifi/WifiConfigStore.xml

Then restart the device.-->

6.Recovery after failed firmware

If something goes wrong and the vacuum cleaner stops turning on or loads in a loop, don't panic. In most cases, the device can be restored. Consider typical scenarios and solutions.

Vacuum not activated (black screen, no button response)

This is the most complicated case, which usually means damage to the bootloader.

• 🔧 Programmer CH341A (near 500-1000 ruble).
• 💾 Dump original firmware for your model (can be found on the forums or make a backup in advance).
• 🖥️ Flashrom or NeoProgrammer.

Recovery process:

1. Disassemble the vacuum cleaner and find a flash memory chip (usually Winbond). 25Q128JV or similar).
2. Connect the programmer to the chip contacts (see diagram for your model!).
3. Count the current firmware and save the dump (in case something goes wrong).
4. Write the original firmware back to the chip.

⚠️ Note: When working with a programmer CH341A Never plug in the power. 5V To the flash memory chip, just use it. 3.3V, Otherwise you'll burn the chip.

The vacuum cleaner is loaded in a cycle (infinite reboot)

This problem usually arises from incompatible firmware or an interrupted update process.

1. Try resetting to factory settings: press the Reset button for 10 seconds.
2. If the reset does not help, re-swipe the device through Recovery Mode (see Section 3.2).
3. For models on Rockchip, you can use the RKBatchTool utility for forced firmware.

6.3. The vacuum cleaner is switched on but not connected to Wi-Fi

A common problem after installing custom firmware.

• Check if the firmware supports your region (some custom builds block the connection in Russia).
• Reset the network settings through ADB: adb shell am broadcast -a android.intent.action.WIPE_NETWORKS
• If Valetudo is used, connect to its access point and set up Wi-Fi again via the web interface.

7. Post-firmware optimization: settings and tweaks

Successful firmware is only half the battle, and in order for a vacuum cleaner to work consistently and efficiently, you have to set it up correctly.

Calibration of sensors

Once custom software is firmware, the gyroscope and laser rangefinder can be miscalibrated to correct this:

1. Place the vacuum cleaner on a flat surface.
2. For Valetudo, execute the command: adb shell valetudo calibrate
3. For other firmware, find Sensor Calibration in the menu.

Configure maps and cleaning areas

Custom firmware allows you to flexibly configure cleaning areas, for example, in DustBuilder you can:

• 🗺️ Create multi-level maps (for two-storey houses).
• 🚫 Prohibit cleaning in certain areas (for example, near a cage with animals).
• 🔄 Set the priority of cleaning for different rooms.

For this:

1. Open the web interface of the firmware (usually at the address) http://[IP_vacuumer]).
2. Go to the Map Management section.
3. Draw zones on the map and save the settings.

Optimization of the battery

Some custom firmware aggressively discharges the battery to extend its lifespan:

• 🔋 Turn off background activity (if the firmware supports energy saving settings).
• 📉 Reduce the brightness of the indicators (in Valetudo, this is done through Settings). → LED Brightness).
• 🔄 Regularly perform a full cycle of discharge / charging (once in a week). 2-3 month).

You can also calibrate the battery through ADB:

adb shell dumpsys battery set ac 1


adb shell dumpsys battery reset

7.4 Integration with a smart home

One of the main advantages of custom firmware is the ability to integrate with Home Assistant, OpenHAB or Yandex Alice.

For Valetudo:

1. Install the Valetudo Integration plugin in Home Assistant.
2. Add the vacuum cleaner as a new device through IP-address.
3. Set up automation (such as cleaning on schedule or in the absence of a home).

For DustBuilder:

1. Turn it on. MQTT firmware settings.
2. Set up a broker MQTT (For example, Mosquitto).
3. Connect the vacuum cleaner as MQTT-device in your smart home system.

8. Frequent errors and their solutions

Even if you follow the instructions strictly, you can get errors, and let's look at the most common ones and how to fix them.