The Xiaomi Mi Scooter 1S Scooter

Xiaomi’s electric vehicle has gained popularity due to its reliability and availability, but users often face software limitations. Mi Electric Scooter 1S owners may be interested in changing the region to increase the maximum speed or installing updates that do not come automatically. The process of flashing the controller allows you to unlock the potential of the device, but requires strict adherence to the sequence of actions to avoid locking the battery.

Before you start modifying software, you need to understand that any changes in factory settings carry certain risks.Battery Management System (BMS) or main controller flashing is an interference with the operation of complex electronic systems.The article describes safe methods of updating through official and trusted third-party tools available to the average user.

In this guide, we will look at not only the standard Bluetooth update, but also the more complex manipulation of regional codes: Changing the region from China to Europe or the United States with the 1S model allows you to increase the top speed from 20 to 25 km / h. It is important to prepare a stable Internet connection and a fully charged battery before starting any procedures.

Tools required and preparation for updates

To successfully perform the procedure, you will need an Android or iOS smartphone with the Mi Home app installed. Unlike older models that required a laptop and UART cable, the 1S model supports the “air” update and Bluetooth adapters. Make sure that the scooter battery is at least 60%, as energy consumption can be unstable during the recording process.

The critical step is to check the current firmware version, go to the app, select your scooter, and go to the device settings, and if the system offers an update but it doesn't install, it may be the regional limitations of the server, which would require changing the region in the Mi Home app itself to the appropriate firmware code.

⚠️ Note: Do not interrupt the process of writing data to the memory of the controller. If the battery runs out or communication is interrupted at the time of recording the bootloader, the device can only be restored through the programmer.

Alternative applications such as Xiaofy or DownG, which are often used to force firmware installation, are also worth preparing, and can be downloaded from official app stores or trusted repositories to bypass regionality checks that Xiaomi has implemented in recent software versions.

Change of region and unlock speed

One of the main reasons users are looking for a way to reflash the Xiaomi Mi Scooter 1S is to remove the speed limit. By default, devices shipped to certain regions are limited to a speed of 20 km / h. Changing the region in the application to China or the United States often allows you to upgrade to a version where the limit is 25 km / h or higher.

The process of changing the region is as follows: in the Mi Home app, go to the user profile, select Settings and change the country, then you need to re-assign the scooter. If the system says that the device is already linked to another account or region, you may need a complete reset through a combination of buttons on the display.

However, just changing the region in the profile is not enough. You need to have the controller firmware itself support the new parameters. The Bluetooth module in the 1S model transmits the region data, and if they do not match the entries in the BMS memory, the functionality may be limited. Sometimes you need to re-run the battery control unit itself to completely remove the restrictions.

It's worth noting that after the region change and the upgrade, the reclamation and braking algorithm can change, which is normal, because the engine calibration depends on the software code, and if the behavior of the vehicle has changed radically, it makes sense to return the original settings through the recovery menu.

Instructions for updating firmware through Mi Home

The official upgrade method is the safest for beginners, requiring no in-depth knowledge of electronics and is executed in a few clicks, the main condition is a stable Bluetooth signal and no background downloads on the smartphone that can interrupt the connection.

To start, open the Mi Home app and make sure the scooter is connected. Click on the device icon, then select the three dots in the upper right corner to log in to the menu. Find "Check Updates" or "Firmware update." If the new version is available, the system will prompt you to start installing.

Sequence of action:


1. Connect the scooter to the phone.




2. Enter the settings of the device.




3. Press "Update."




4. wait until the process is completed (percentage indicator).




5. Reset the scooter.

When you update, the indicator on the scooter display can flash or go out. This is normal behavior. The controller at this point overwrites its memory cells. If the process is frozen at 99%, don't panic right away — wait 10-15 minutes. Often the system just performs the final verification of checksums.

💡

If the update hangs on one percent for more than 20 minutes, try restarting your smartphone and try again by pre-disabling and turning on Bluetooth on the scooter.

After the new firmware version is successfully installed, the scooter will automatically restart, and it is recommended to check all the functions: lights on, cruise control and residual charge display. If everything is working properly, the procedure can be considered complete.

Use of third-party firmware applications

When official methods don't work or specific modifications are needed, third-party utilities come into play, applications like Xiaofy or DownG have advanced functionality to work with BMS and speed controllers, and they allow you to force firmware to be installed without checking the region.

The interface of such programs usually contains a list of compatible devices. Select the Xiaomi M365 / 1S / Pro 2 from the list. The application considers the current version of the firmware and will offer options available for download. It is important to download the file that matches the hardware revision of your scooter.

When using third-party software, an internet connection is often required to download firmware profiles. Make sure that the antivirus on the phone does not block the application, as it actively uses Bluetooth protocols. In some cases, permission to access geolocation may be required.

Resetting BMS and eliminating errors

Sometimes flashing is not required to improve performance, but to restore performance. If the BMS is gone in defense or shows an error that cannot be reset with standard methods, a deep reset is required, often after a deep discharge or voltage surges.

In diagnostic applications like Xiaofy, there's a "BMS Reset" function that sends a special command to the battery controller, forcefully dropping error flags, and you need to plug the scooter into the charger before you do that, because it can take a few minutes and require energy.

⚠️ Attention: Reset BMS If the battery has an internal short circuit, a software reset will not help and can be dangerous.

After resetting the BMS, calibration may be required. To do this, fully discharge the scooter before turning it off, then charge it to 100% without interruption.This will allow the controller to re-determine the capacity and align the balance of the cells. If the error returns immediately after the reset, hardware repair is likely required.

Possible problems and ways to solve them

Users often encounter common bugs during the firmware process, such as an “Update failed” message that may indicate a bootloader version is incompatible, in which case try to roll back to the older official firmware first, and then update in stages.

Another common problem is the loss of communication with the scooter in the middle of the process. If the scooter stopped responding to commands, but the display is on, try a hard reset by holding the on button and the brake simultaneously for 10 seconds. If the display is out and not on, perhaps the controller requires soldering or connecting to the UART.

If the headlight or power button stops working after the firmware, check the settings in the application. Sometimes resetting the settings causes the peripheral to turn off. Return the default configuration via the General Settings menu.

💡

Most software errors are solved by a full discharge-charge cycle and re-binding the device in the Mi Home application.

Frequently Asked Questions (FAQ)