Modern smart TVs like the Xiaomi Mi TV 4S run on Android TV, which requires regular updates to keep things running. However, users often face situations where the standard air-to-air update (OTA) stops coming, freezes at a certain stage, or the device starts to work incorrectly, in which case the only right solution is to manually reinstall the system software, which allows not only to return to work, but also to change the region of the device to a global one.
Xiaomi TV firmware requires careful and accurate follow-up, as interrupting data recording can lead to software failure. Before starting the procedure, make sure that you are using the version of firmware that is designed for your particular motherboard model. Mistaking file selection can lead to the screen remaining black and the device requiring recovery through an engineering port, which is almost impossible to do without specialized equipment at home.
In this guide, we will discuss in detail all the stages of preparation, search for current images of the system and the process of installing them. USB-The drive and the more complex scenarios involved in recovering a broken device, understanding these processes will allow you to solve most of your Mi's software problems on your own. TV 4S.
Determination of the current version and preparation of equipment
The first step before any software intervention is to accurately determine the current configuration of your device. The back of the TV, the serial number sticker, often shows the model, but more important information can be obtained through the system menu. You need to go to Settings → About TV and write down the build version, the CPU model and the current region. This data is critical, because the firmware for the Chinese version (China ROM) is different from the global (Global ROM).
You will need to carry out the procedure USB-It is recommended to use a flash card with a volume of not more than 32 GB formatted in the file system. FAT32. Use of large-volume storage or file system NTFS The speed of recording also plays a role: the faster the flash drive, the less likely it is to be errors when reading data.
⚠️ Attention: Use USB-Hubs (forks) during firmware is strictly not recommended. USB-TV port, preferably in version 2.0 (black) connector, if any, as they often have better loader compatibility.
Also make sure that the remote is in good condition and has fresh batteries installed. In some recovery scenarios, the system may request confirmation of actions at the time of boot, and if the remote does not respond, the process can stand up. Checking the health of all peripherals is a basic step that is often ignored, which leads to unnecessary problems.
Where to look and how to choose the right firmware
Finding the right software is the most critical step. The official files for Xiaomi Mi TV 4S can be found on specialized forums such as 4PDA or on the official repository site miui.The key is matching the model code. For example, the L43M5-5ARUN model needs one version, and for L43M5-AD it is a completely different version.
When downloading, pay attention to the type of firmware. There are stable versions (Stable) that are recommended for most users, and developer versions (Developer) that may contain new features but have unstable work. For everyday use, always choose a stable branch. The firmware file usually has the.bin extension or is an archive that contains this binary file.
How to distinguish global firmware from Chinese?
It is important to check the integrity of the downloaded file if the file is archived (ZIP or RAR), It needs to be unpacked before it's written to a flash drive, and it has to have a firmware file inside, often called a firmware file. upgrade_loader.pb or having a specific name that depends on the processor platform (for example, for Amlogic or MStar).Do not rename files unless the instructions for a particular version of the software explicitly require it.
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Use only verified sources to download firmware. Files from questionable file sharing sites can be modified or corrupted, leading to malware installation or system failure.
Preparation of USB-drive and file system
Proper preparation of the medium is key to successful recording. As mentioned earlier, the file system must be FAT32. If your flash drive is larger or formatted in NTFS/exFAT, you will need to do formatting. This can be done with standard Windows tools or using specialized ilets, but standard tools are usually enough.
Once formatted, copy the firmware file to the drive's root directory. Don't put it in folders or subfolders -- the TV bootloader looks for the installation file at the root. The file name should also remain unchanged. If you downloaded the archive, make sure you extract the executable firmware file, rather than copying the archive itself to a flash drive.
☑️ Preparation USB-storage
There is a nuance to partition table. Some older Xiaomi TV models see MBR partition table flash drives better than GPT. If the firmware process doesn't start, though it's done right, try re-creating the partition table on the flash drive in MBR mode. This is easily done through the standard disk management utility in Windows when you create a new simple volume.
Instructions for installing firmware via USB
The installation process begins with a complete shutdown of the TV, not just a sleep-down, but a power-off, pull the power cord out of the socket, or use a button on the case if it completely shuts down the device. USB-It is recommended to use the port closest to the power connector or marked as service port (if marked).
Once you plug in the flash drive, turn on the TV. Depending on the bootloader version, the system can automatically detect the update file and prompt installation. If automatic detection fails, you'll have to use a combination of buttons on the remote or the case. Most often, clamping the OK and Back buttons (or the power button) buttons at the same time as the power connection will appear on the screen Recovery menu or the Android logo with the robot.
| Action. | Description | The result |
|---|---|---|
| Automatic start | TV sees the file in the root | The update window appears |
| Button combination | Clip OK + Power. | Entrance to Recovery Mode |
| Manual launch | Through the "About the device" menu. | Selecting a USB file manually |
When the upgrade process begins, the progress bar will appear on the screen. At this point, it is strictly forbidden to remove the flash drive or turn off the TV from the outlet. The process can take from 5 to 15 minutes depending on the amount of updates and the speed of recording the flash drive. The TV can reboot several times, the screen can go out and light up - this is normal behavior.
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Successful firmware ends with a complete system reboot and the appearance of the initial setting screen (language selection, Wi-Fi connection).
Changing the region and installing Google Services
If you’ve been flashing the Chinese version of your TV with global firmware or just want to change region to access certain apps, you may need an extra step. In some cases, after the firmware is installed, the system still has a binding to the previous region. To change region to Xiaomi Mi TV 4S, you often use the method of changing settings through the engineering menu or special launcher apps.
One of the main reasons for the reflashing is the lack of Google Play Store on Chinese versions. Global firmware usually contains all the necessary certificates and services. However, if the app store doesn’t show up after installing the global version, check the date and time settings – the wrong time can block the connection to Google servers. Also make sure that the security settings allow you to install apps from unknown sources if you plan to install them. APK-manually.
To fully work Google Services on your TV, you need to log in to your Google account when you first set up, so if the TV offers to create a new Mi Account, you can skip it or do it later, and the main thing is to not miss the Internet connection stage, since the system must activate the license.
⚠️ Note: When you change region from China to Global, some pre-installed Chinese apps may remain on the system, and can be removed via the app menu by pressing the menu button on the remote and selecting "Delete" or using the app menu. ADB-Teams for Advanced Users.
Problem Solving: The TV is not turned on or got stuck
When the TV doesn't turn on after the firmware is installed, only the indicator lights up, or the logo appears and the rest of the loading is not going to go, called a bootloop. This can happen because of an interrupted recording, an incorrect version of the firmware or a broken file. The first step in this situation is to try to reset to factory settings through Recovery Mode. To enter it, usually a combination of buttons on the TV body (often a control joystick or a power button) when you plug the power cord into the socket.
If you can log in to Recovery, select Wipe Data or Factory Reset, which will delete all user data, but can save the system. If the TV only reacts to the power connection (LED lights) and does not respond to the remote, the bootloader may be damaged. In this case, only the re-flashing through UART-console, which requires disassembling the TV and the availability of soldering skills and working with the programmer.
Another common problem is the installation error, where the progress bar reaches a certain percentage and gives an error message, most often this indicates a poor USB stick contact or a corrupt firmware file. USB-port, other flash drive and re-download the firmware file, checking its checksum (MD5 or SHA1), If such information is provided by the author of the firmware.