How to change the hertz (Hz) on the TV or monitor Xiaomi: instructions with nuances

Screen refresh rate (hertz) is a key parameter that affects image smoothness, eye comfort, and even performance in games. Owners of Xiaomi equipment — whether it is Mi TV series, Mi Desktop Monitor monitors or Mi Projector projectors — often face the need to change the standard 60 Hz to 120 Hz, 144 Hz or other values. But this is not always done intuitively: somewhere the option is hidden in the depths of the menu, and somewhere requires additional manipulation with the firmware.

In this article, we will discuss all the official and informal ways to change the hertz on Xiaomi devices, including nuances for specific models (for example, Mi TV Q2 75" or Redmi Smart Fire TV). Particular attention will be paid to the problem of the "gray" frequency menu on some firmwares when the option is not available despite hardware support, you will also learn how to check the real hertz screen and why sometimes after changing the settings, the image begins to "shake".

Why you might need to change the scalp on Xiaomi

The standard 60Hz is suitable for most tasks, such as watching movies, surfing the Internet or working with documents, but there are scenarios where high refresh rates have significant advantages:

• 🎮 Games on consoles or PC: 120 Hz+ And the animations get smoother, and the input lag decreases, which is critical for shooters or racing.
• 🎬 Watching high-quality video FPS: Content filmed on 120fps (For example, sports broadcasts or YouTube clips, will be played without artifacts.
• 👁️ Eye comfort: With prolonged work behind the monitor, high frequency reduces fatigue by reducing flickering.
• 📊 Professional Tasks: Designers and video engineers often calibrate the screen to specific Hz for accurate color reproduction.

But there is a downside: not all Xiaomi devices support high frequencies out of the box. For example, the budget models of Redmi Smart TV can have hardware support 120 Hz, but lock it at the firmware level.

⚠️ Note: On Xiaomi TVs with OLED-matrices (e.g. Mi) TV OLED) High hertz speeds up pixel wear.maker recommends using 60Hz for static content.

What Xiaomi models support the Hertzov change

The ability to change the refresh rate depends on the matrix, processor and firmware version. Below is a table with popular models and their capabilities:

If your model is not on the list, check the specifications on Xiaomi’s official website or use utilities like DisplayHDR Test to test the real frequency. Note that even if the TV supports 120 Hz, they may require an HDMI 2.1 cable and a compatible signal source (for example, PS5 or NVIDIA RTX 30-series).

Official way: changing the hertz through the settings menu

On most modern Xiaomi TVs (2022 and later), the frequency change option is available directly.

1. Turn on the TV and go to Settings → Image → Additional settings.
2. Select the Update Frequency (or Refresh Rate in English firmware).
3. From the available options (50 Hz, 60 Hz, 100 Hz, 120 Hz) choose the right one.
4. Confirm the changes and wait for the reboot (if necessary).

On the Mi Desktop Monitor, the path is different:

1. Press the Menu button on the body.
2. Go to the System. → Frequency of update.
3. Choose 144Hz or 165Hz (depending on the model).

⚠️ Note: Some of the Mi's firmware TV Update frequency can be blocked (grey) which means that either your model does not support Hz change or activation is required through developer mode.

Unofficial methods: unlocking hidden options

If the Hertz menu is not available, but you are sure that your model supports a high frequency (for example, according to specifications or tests), you can try to activate it through the developer mode or ADB-team.

Method 1: Enabling the Developer Mode

On Xiaomi TVs with Android TV:

1. Go to Settings → About TV → The version of the software.
2. Click on the Build Number 7 times in a row until you become a developer!
3. Go back to the main settings menu and open a new section for developers.
4. Activate the debugging option via USB.

After that, the Image menu may have a hidden option called Update Frequency, and if not, move on to the next one.

Method 2: Using ADB

You will need a computer with installed ADB-Drivers and the debugging on the TV:

adb connect [IP- address of your TV


adb shell settings put global peak_refresh_rate 120




adb shell settings put global min_refresh_rate 120




adb reboot

After the restart, the TV should run at 120 Hz. If the command does not work, try an alternative option:

adb shell am start -n com.android.tv.settings/.display.RefreshRateActivity

This command directly opens the frequency menu if it is locked in the interface.

Problems after changing the hertzovka and their solution

Frequency changes don't always go smoothly. Let's look at the typical errors and how to fix them:

• 🖥️ Image shaking or blurred: Check the cable HDMI — 120Hz requires High Speed (18Gbps) or Ultra High Speed (48Gbps.
• 🔥 TV overheats: High frequency increases the load on the processor.Make sure the vents aren't closed and reduce the brightness of the screen.
• 🎵 No 120Hz audio: Some Xiaomi TVs turn off audio output at high frequency.The solution is to use an external sound system (soundbar or soundbar) AV-receiver).
• 🔄 Frequency resets after shutdown: This is a firmware bug. Helps reset to factory settings or roll back to a previous version of software.

If the Hz change causes the TV to spontaneously reboot or shut down, return the standard 60Hz and check the device for overheating using the AIDA64 app (available on Google Play for Android TV).

💡

Before experimenting with hertzovka disconnect all devices from the HDMI-port, other than the source of the signal (for example, consoles or PCs) This will help to avoid conflicts of handshake protocols.

How to Check the Real Screen Hertz

The frequency set in the settings is not always the same as the real frequency. To make sure that the TV is really running at 120 Hz, use one of the methods:

Method 1: Online Testing

Open in the browser of the TV (or connected PC) sites:

• TestUFO - shows the real FPS and allows you to estimate the smoothness.
• VSYNC Tester – checks the synchronization of frames.

Method 2: Android TV apps

Install from Google Play:

• Display Tester – shows the current frequency, color gamut and input delay.
• Refresh Rate Checker is a specialized tool for checking Hz.

Method 3: Through the TV menu

On some Xiaomi models, the real frequency is displayed in Settings → About TV → System Status (Current refresh rate).

⚠️ Note: If the tests show 60 Hz despite the 120 Hz settings, the problem may be the signal source. For example, the Xbox Series X automatically lowers the frequency if the cable is not installed. HDMI does not support the required capacity.

💡

On Xiaomi TVs with MTK9669 processor (such as Mi TV Q1), the actual frequency may differ from the stated frequency by 5-10% due to the peculiarities of signal processing.

Features for gamers: Adaptive Sync and ALLM

If you use a Xiaomi TV for gaming, it’s important not only to increase the hertz, but also to customize the additional features:

• 🎮 Adaptive Sync (FreeSync/G-Sync): Synchronizes the frequency of the screen with FPS games, eliminating frame gaps. Included in Settings → Image: → Game Mode.
• ⚡ ALLM (Auto Low Latency Mode: Automatically switches the TV to game mode when the console is detected. → HDMI → Device management.
• 🖥️ HDR Dolby Vision: At high frequencies (120 Hz), some Xiaomi models are shutting down HDR. Check your priorities in Settings → Image: → Regimes HDR.

For PlayStation 5 and Xbox Series X|S, configure the output signal in the console menu:

1. On PS5: Settings → Screen and Video → Video output → Update Frequency → select 120Hz.
2. On Xbox: Settings → General → Screen Settings → Video Modes → Enable 120Hz and ALLM.

If after turning on 120 Hz games begin to “slow down”, try to turn off the variable refresh rate (VRR) – on some Xiaomi firmware it works unstable.

FAQ: Frequent questions about changing the hertz on Xiaomi