How to Sweat a Xiaomi Mi TV 4S: All the Ways to Update the Software

Xiaomi Mi TV 4S remain popular even years after its release thanks to a combination of price, picture quality and functionality based on Android TV. However, over time, owners face the need to update the firmware - whether it is fixing bugs, adding new features or restoring functionality after a failure. Unlike smartphones, TV firmware requires special care: a bug can turn the device into a "brick", and the official documentation from Xiaomi often keeps silent about the nuances.

This article covers all current ways of firmware Mi TV 4S (including models L43M5-5ASN, L50M5-5ASN, L55M5-5ASN and L65M5-5ASN): Automatic updates by air» (OTA) until manual restoration through USB or ADB. We will understand where to download official firmware files, how to avoid typical errors (for example, Error). 0x00000001 Or hanging on the logo, and what to do if the TV stopped turning on after a failed update. TV 4S — locking the bootloader on some versions of the software, which requires additional manipulations before firmware.

Before you start, make sure your TV model is indeed 4S - information can be found on the back sticker (like the MDZ-43-AA for the 43-inch version) or in the Settings → About TV menu. firmware for the Mi TV 4A, 4C or 4X is incompatible!

1. Firmware Preparation: What to Do Before Starting

Regardless of the method chosen, preparing your TV and firmware files is a critical step, neglecting them leads to 80% of device build-ups. Start by checking the current version of the software: go to Settings → About TV → Software Version. Write it down to help you choose the right firmware file (for example, switching from MSP4.10 to MSP5.0 may require an interim update).

Download the official firmware only from verified sources:

• 🔗 Official Xiaomi website (section) TV → Choose a model).
• 🔗 Xiaomi Firmware Updater (Hash Amount Firmware Archive for Integrity Checking).
• ⚠️ Avoid.exe files or archives without a signature – these can be viruses or modified firmware.

For USB firmware, prepare a FAT32 flash drive with a capacity of no more than 32 GB (preferably 8-16 GB). Format it with the SD Formatter utility or standard Windows tools (select Format in FAT32, cluster size is 4096 bytes). Do not use NTFS or exFAT - the TV does not recognize such drives!

⚠️ Attention: If your Mi is yours TV 4S It was purchased in China (models with suffixes). CN in the title), firmware global version (Global or EEA) It can block access to certain features, such as Google Play. Check the region in the settings (Settings) → Preferences → Region).

Method 1: Automatic Update (OTA)

The safest and easiest method is to upgrade over-the-air, which is suitable if the TV is turned on, connected to the Internet and has no critical failures. OTA-updates every 2-3 months, but they may come with a delay depending on the region.

Instructions:

1. Connect the TV to the network via Wi-Fi or Ethernet cable (the latter is more reliable).
2. Go to Settings → About TV → System Update.
3. Click Check Updates. If the update is available, keep track of progress — it can take up to 30 minutes.
4. After you boot, the TV will suggest you install the update. Agree and wait for the restart.

If the update is not available, try:

• 🔄 Reset network settings (Settings) → Network and Internet → Resetting the network).
• 🕒 Wait 1-2 days – sometimes Xiaomi servers are loaded.
• 📡 Use it. VPN India or Singapore – where updates often appear earlier.

⚠️ Attention: If, during OTA-The TV has been stuck in the Installation phase for more than 40 minutes, don't pull the power cord. Wait at least 1 hour, sometimes it just slows down.

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Automatic updates over the Internet are the safest way, but require a stable network connection and patience: on big screens (55\" and 65\") process may take up to 45 minute.

Method 2: Firmware via USB (manual method)

Handheld firmware via USB is required if:

• 🔄 OTA-The update is not working or is constantly failing.
• 🛠️ You need to go back to the previous version of the software.
• 🚨 The TV is loaded in a loop (bootloop) or hangs on the logo.

This method will require:

• 💾 Flash drive. FAT32 (See “Preparation” section»).
• 📁 Firmware file in.zip format (do not unpack!).
• 🔌 Uninterruptible power supply (laptop or UPS) - interruption of the process is fraught with failure.

Step-by-step:

1. Download the firmware for your model from the official website (see section 1) and check its hash amount (for example, through the utility 7-Zip or HashMyFiles).
2. Rename the file to update.zip (importantly, no other names are recognized).
3. Copy it into the root of the flash drive (not into the folder!).
4. Put the flash drive in. USB-TV port 2.0 (usually side-sided, marked in blue).
5. Press the button Menu + Volume Down (volume down) and, holding them, connect the TV to the power.
6. Hold the buttons for 10-15 seconds until the recovery mode appears.
7. Select the Apply update from USB (manage volume buttons, confirmation – OK).
8. Select the update.zip file and wait for the process to end (20-40 minutes).

Download the official firmware file|The flash drive is formatted in FAT32|File renamed to update.zip|USB-port 2.0 free|TV connected to UPS-->

If the TV doesn't turn on or flashes a red light after you've done it, try repeating the process with another flash drive or firmware file. Sometimes a full reset (Wipe data/factory reset in the Recovery menu) helps, but it will delete all data, including installed apps.

Method 3: Firmware through ADB (for power users)

The Android Debug Bridge (ADB) method is suitable for advanced users because it requires command line work.

• 🔧 You need to install custom firmware (for example, LineageOS for TV).
• 🔄 You need to bypass the bootloader lock (on some versions of the Mi) TV 4S After upgrading to Android 9).
• 🛠️ Restore the device after a soft brick (when the TV is turned on but not booted).

To start, turn on USB debugging on the TV:

1. Go to Settings. → On TV.
2. Click 7 times on the Build Number until the message “You became a developer” appears.
3. Go back to Settings → For developers and enable USB debugging.

Connect the TV to your computer via cable USB-A — USB-A (need OTG-Adapter if the ports don’t match and execute commands in the terminal:

adb devices


adb reboot recovery




adb sideload update.zip

If the process is interrupted with adb: failed to read command: No error, try:

• 🔌 Use the other USB-cable (preferably original).
• 🖥️ Run the command line on behalf of the administrator.
• 🔄 Restart the TV and computer.

5. Solving typical firmware errors

Even when you follow instructions, you can get errors, and the following are the most common problems and solutions:

If the TV after a failed firmware does not respond to the remote and does not turn on, try a hardware reset:

1. Turn off the TV.
2. Press the Power button on the case (not the remote!) and hold it for 30 to 40 seconds.
3. Connect the power without releasing the button for another 10 seconds.
4. Let go – the TV should reboot in Recovery Mode.

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If you have lost the sound or image after the firmware, check the signal output settings: go to Settings → Sound → HDMI output and select PCM over Auto. This will solve the problem with most external devices.

6. Where to download firmware for Xiaomi Mi TV 4S

The official firmware for the Mi TV 4S is distributed by region and model, and the current links and versions for 2026 are as follows:

For models with CN suffix (Chinese versions), it may be necessary to unlock the bootloader before running the global version.This is a risky procedure that voids the warranty. Detailed instructions can be found on the XDA Developers forums (look for themes on request for Mi TV 4S unlock bootloader).

If the correct version is not on the official website, check the archive on Xiaomi Firmware Updater. It stores all firmware, including old versions for rollback.

7. Frequent questions after firmware

After a successful software update, users often face new nuances, and here are the answers to the most popular questions: