How to properly install NUM Xiaomi TV: 3 proven methods

Installation NUM (New version of firmware on Xiaomi Mi TVs TV — A procedure that can significantly improve a device’s performance, add new features, or fix critical errors, but incorrect actions during an upgrade often lead to hardware “bricking”, loss of warranty, or unstable system performance. In this article, we will discuss all the current installation methods. NUM, including official and alternative methods, and how to avoid common mistakes.

It is important to understand that the term "NUM" In the context of Xiaomi, it usually involves updating the firmware through alternative channels (such as beta or modified builds), rather than standard ones. OTA-These firmware may contain experimental features not available in official releases, but the risks of installing them are higher. If your goal is simply to upgrade the TV to the latest stable version, just use the built-in Settings feature. → On TV. → Updating the system.

Before proceeding with the procedure, check:

• 🔌 Remote charge: If the battery sits down during the upgrade, the process may be interrupted.
• 📶 Network Stability: Uploading firmware files will require a high-speed connection (from 50 Mbps).
• 🔄 Backup: Save settings and applications through Settings → Account and security → Backup.

1. What is it? NUM Why do you want to install it on Xiaomi? TV

abbreviation NUM (New Update Method, in the Xiaomi community, denotes alternative ways to update firmware that are not distributed through standard channels:

• 🔍 Experimental features: support for new codecs (Dolby Vision, AV1) orroid-based interface TV 12 for older models.
• 🛠️ Corrections of critical bugs that have not yet been included in official releases.
• 🚀 Performance optimization: Reducing lags when switching channels or running applications.

But there is a downside: NUM-Firmware is not fully tested for compatibility with all TV models, so the risk of problems is higher. TV 4S 55" users have experienced a broken remote or no sound in some applications.

⚠️ Attention: Installation NUM-Xiaomi does not officially support alternative upgrade methods and may refuse service if it finds traces of interference with the system.

Before making a decision, consider the need for an update:

2. Preparation of Xiaomi TV for installation NUM

Regardless of the upgrade method chosen, device preparation is a critical step, and neglecting it can lead to data loss, the inability to turn on the TV, or damage to system files.

First, check the current version of the firmware:

1. Open the Settings (button with a gear on the remote).
2. Go to the section About TV → The version of the software.
3. Write down the current version (for example, MIUI TV 2.0.123.1).

This information will be useful if you need to roll back.

Follow the mandatory steps:

Make a backup copy of settings and applications |

Check the vacant space (minimum 1 GB)|

Shut it down. USB-devices (flash drives, hard drives)|

Connect the TV to an uninterruptible power supply (UPS)|

Make sure the remote is charged or use a wired keyboard

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⚠️ Note: If you are updating your Xiaomi Mi TV TV Q1 Or a new model based on Google TV, Please note that some NUM-Firmware can block access to Google Play services. Before installing, check user reviews of your model on forums (for example, 4PDA or XDA Developers).

For Mi models TV 4A/4C/4S (2018–2020 (d) additionally recommended:

• 🔧 Reset to factory settings (if the TV is unstable). → Account and security → Resetting settings.
• 📁 Format USB-storage FAT32 (flash-stick).
• 🔒 Disable parental control and app blocking.

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If your Xiaomi TV can’t see USB-Driver, try using the port USB 2.0 (usually black) instead of USB 3.0 (blue) Some models don't work well with flash drives over 32GB.

Method 1: Installation NUM through USB (power-user)

This method is suitable for installing custom firmware or beta versions. NUM, which are not distributed through OTA. It requires that you have USB-drive (recommended 4-8 GB) and firmware file in.zip or.img format.

Step-by-step:

1. Download firmware from an official source (e.g. miui.tv or a thematic forum) and make sure the file is designed for your model (e.g., your model, MiTV_MS11_2.0.123_NUM.zip for Mi TV MS11).
2. Prepare. USB-The storage device: format it in FAT32 (use the utility SD Formatter for reliability. Copy the firmware file into the root drive directory (not into folders!). update.zip (if required by the instructions for the firmware).

Put the flash drive on.

Settings → On TV. → Updating the system → Update through USB

Start the process.

The installation process will take 5-15 minutes.

• ❌ Don't press buttons on the remote.
• ❌ Don't turn off the TV power.
• ✅ Watch the progress indicator on the screen.

After the TV is finished, it will restart automatically.

⚠️ Attention: On Mi models TV Q2/Q1E processor-wise MT9638 Installation of unofficial firmware can lead to blocking the bootloader, in which case the service center can only be restored using special equipment.

Method 2: Update through ADB (developer)

The method is Android Debug Bridge (ADB) fit NUM-Firmware, if the standard update is USB It requires command line skills and a TV connection to a PC.

What you need:

• 🖥️ Computer with drivers installed ADB and Platform Tools (you can download it on the Android website).
• 🔌 Cable USB-A to USB-A (to connect a TV to a PC).
• 📄 Firmware file in.zip format.

Instructions:

1. Turn on USB debugging on TV: Settings → About TV → Software Version → Click 7 times on Software Version (Developer Mode is activated) Settings → Additional → For Developers → Debugging on USB (enable)
2. Connect the TV to your PC via cable. In the command line, do: adb devices If the device appears in the list, type: adb sideload path to file/update.zip
3. Wait for installation to be completed (Total xfer message will appear in the console: 1.00x).

Advantages of the method:

• ✅ It works even if the TV is not loading normally.
• ✅ Allows you to install firmware not signed by Xiaomi.

Disadvantages:

• ❌ Hard for beginners.
• ❌ Risk of damaging system partitions if the commands are wrong.

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Method ADB — single-handed NUM Xiaomi TVs with a locked bootloader, unless the manufacturer provides official files for recovery.

5. Method 3: Automatic update via OTA (safest)

If your goal is simply to upgrade your TV to the latest stable version, use the built-in feature. OTA (This method requires no technical skills and minimal risk.

How to check and install the update:

1. Connect your TV to the Internet (preferably via an Ethernet cable for stability).
2. Go to Settings → About TV → System Update → Check for updates.
3. If the update is available, click Download and Install.
4. Wait until the TV is finished (the TV will restart automatically).

Features OTA-updates to Xiaomi TV:

• 🔄 Updates are distributed gradually: your model may get it later than others.
• 📥 The file size is usually 300-800 MB (depending on version).
• ⏳ The process takes 10–30 minutes (including download and installation).

⚠️ Attention: On Mi TVs TV P1 and newer after updating through OTA Xiaomi account may be reset, remember your username and password in advance, or untie your device in the Mi Home app.

If the update is not available, try:

• 🔄 Reboot the TV and router.
• 🌍 Change the region to India or China (sometimes updates appear there earlier).
• ⏳ Wait 1-2 days and check again.

Typical errors in installation NUM and their decisions

Even when following the instructions, users often encounter problems, and let's look at the most common mistakes and how to fix them.

After installation NUM television:

• 🔊 No sound: check the sound settings → Exit → HDMI ARC/SPDIF.
• 📺 Shows artifacts on the screen: reset to factory settings or roll back to the previous version.
• 🔄 Constantly reboots: try flashing through Fastboot (instructions in the next section).

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If the Netflix or YouTube app is missing after the update, delete the cache of those apps in the settings (Settings) → Annexes → Delete the data. Often this solves the problem without rolling back the firmware.

7. Firmware rollback: how to bring back the old version

After installation NUM The TV has become worse, you can return the previous version of the firmware. This will require an official firmware file from Xiaomi (you can download on miui.tv in the section "Archive versions").

Instructions for rollback:

1. Download the desired firmware version (for example, MiTV_MS11_1.0.98_stable.zip).
2. Place the file on the formatted file in FAT32 flash-drive.
3. Connect the flash drive to the TV and go to Recovery Mode: Turn off the TV. Press Menu + Power on the remote and hold for 10-15 seconds.

Apply update from USB

Reboot system now

Important nuances:

• 🔙 The rollback is only possible on versions that were installed earlier. Installing an older firmware than the one that was out of the box can lead to a lockdown of the downloader.
• 🔄 After rollback, reset the settings to factory (Wipe) data/factory reset in Recovery).
• ⚠️ On some models (e.g., Mi) TV Q2 75) the rollback is blocked by the manufacturer, and only the service will help.

8.Alternative methods: Firmware via Fastboot

If the TV doesn't turn on or the standard methods don't work, you have to run the firmware on the Fastboot, and it requires a PC, a cable. USB-A to USB-A and command line knowledge.

Step-by-step:

1. Download Fastboot firmware for your model (file with.tgz or.img extension).
2. Unpack the archive in a folder with Platform Tools.
3. Connect the TV to your PC in Fastboot mode: Turn off the TV. Press Menu + Power on the remote and connect the cable to the PC. Hold the buttons until the Fastboot sign appears on the screen.

fastboot devices


fastboot flashall

(or fastboot flash {section} {file.img} for phased firmware).

Warnings:

• ⚠️ Continuous power: If a PC or TV shuts down during firmware, the device may become inoperable.
• ⚠️ Compatibility: Fastboot files are strictly linked to the model. Using firmware from another version will lead to an error.

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Fastboot firmware is the last chance to restore the TV if other methods have failed, but it requires strict adherence to instructions and is only suitable for power users.

FAQ: Frequent questions about installation NUM Xiaomi TV