The refresh rate of the screen (measured in hertz, Hz) determines how many times a second the picture on your Xiaomi Mi is displayed. TV or Redmi Smart TV It's a variable that's going to affect the smoothness of the video, the comfort of watching movies, and even the reaction in games. But what if the TV automatically picks the wrong frequency? Or if you plug in a game console and the screen twitches»?
Many users face the problem when the Xiaomi TV is “stuck” at 50 Hz instead of 60 Hz, or vice versa – does not support the desired mode. In this article, we will discuss how to manually change the hertz, which models support this function, and what to do if the desired frequency simply does not appear in the settings: HDMI, built-in Android TV And even the Mi Box.
Spoiler: Not all Xiaomi TVs allow you to change hertz on the fly, in some cases you will need to update the firmware or reset the settings to factory, but everything in order.
Why Xiaomi TV is changing its hertz itself and can it be fixed?
Xiaomi TVs (especially Mi models) TV 4S, Mi TV Q1 Redmi Smart TV X) often automatically adjust the refresh rate to the source of the signal, for example, if you are watching TV on air through the DVB-T2, TVs can switch to 50 Hz, the standard for European broadcasting, and the same happens when you connect some consoles or Apple. TV.
The problem is that automatic switching doesn't always work correctly, and here are the scenarios where users want to manually change hertz:
- 🎮 Games on PS5/Xbox: The consoles support 120 Hz, but the TV sticks to the 60 Hz.
- 🎬 Watching movies: at 24 Hz (cinema standard) the picture can “twitch” due to incorrect interpolation.
- 🖥️ PC Connection: The monitor outputs 144 Hz, and the TV shows only 60 Hz.
- 📺 Etheric TV: instead of smooth 60 Hz TV forced to use 50 Hz.
It’s important to understand that not all Xiaomi models support manual hertz change. TV The A Series often lacks this option, while the flagship Mis are not. TV Q2 or Mi TV Master allows you to choose the frequency manually.
⚠️ Note: If your TV doesn't display the hertz change option in the settings, it doesn't always mean the feature is missing.It may be hidden in the engineering menu or requires activation via ADB.
What Xiaomi models support the change of hertz
Before you try to change the refresh rate, check if your model supports this feature. Below is a table with popular Xiaomi TVs and their features:
| Model TV set | Support for 60 Hz | Support for 120 Hz | Hand-shifting hertz | Notes |
|---|---|---|---|---|
| Mi TV 4S (all sizes) | ✅ Yes. | ❌ No. | ✅ Yes. | Update to MIUI TV 3.0+ is required |
| Mi TV Q1/Q1E | ✅ Yes. | ✅ Yes, only. HDMI 2.1) | ✅ Yes. | 120 Hz only works with PS5/Xbox Series X |
| Redmi Smart TV X | ✅ Yes. | ❌ No. | ⚠️ Partially. | Manual change is available only for HDMI-entrances |
| Mi TV Master | ✅ Yes. | ✅ Yes. | ✅ Yes. | Supports 4K@120 Hz and ALLM |
| Redmi TV A Series | ✅ Yes. | ❌ No. | ❌ No. | Frequency fixed at 60 Hz |
If your model is not in the table, check the specifications on the official Xiaomi website or in the user manual.It is also worth considering that some features may appear after a firmware update. TV 4A It didn’t support 60Hz for Android TV, but after the update MIUI TV 2.5 Options are now available.
How to change hertz to Xiaomi TV standardized
If your model supports manual frequency change, the easiest way is to use the built-in settings. MIUI TV (2.0 and higher).
Step 1. Open the main menu of the TV by pressing the Settings button on the remote.
Step 2. Go to the section:
Settings → Display and sound → Additional settings → Screen refresh rateIf this is not the case, try an alternative route:
Settings → Device → Screen → Update frequencyStep 3: In the window that opens, select the desired frequency:
- 📺 50 Hz – standard for terrestrial TV (PAL).
- 🎮 60 Hz – optimal for movies, games and PC.
- 🏎️ 120 Hz – only for compatible models (required) HDMI 2.1).
After selecting, the TV may go out for a few seconds, which is normal. If the picture does not appear within 10 seconds, try going back to the previous settings or restarting the TV.
⚠️ Note: On some Xiaomi TVs, the Hertz change option appears only when connected HDMI-Device (e.g., console or PC) If you are trying to change the frequency for built-in Android TV, No option, connect any source to HDMI and try again.
☑️ Preparation for the Hertz change
What to do if the desired frequency is not in the settings
Not all available hertz is a common situation in the menu, and here are the possible reasons and solutions:
1. Outdated firmware.
Many Xiaomi TVs only get support for new frequencies after an upgrade. TV 4S 55" before version" MIUI TV 2.3 didn't support 60Hz for built-in Netflix.To update firmware:
Settings → About TV → System Update → Check for UpdatesLimitations HDMI-port.
Not all. HDMI-The ports on the TV are high frequencies, for example, on the Mi. TV Q1 port HDMI 3 (marked eARC) works at 120Hz. Try connecting the device to another port.
3. Incompatible cable.
For 4K@60 Hz need cable. HDMI 2.0, for 120 Hz — HDMI 2.1. If you use an old cable, the TV can automatically lower the frequency.
4. Hidden settings (engineering menu).
Some models have the hertz change option hidden to activate it.
Settings → About TV → MIUI TV version (click 5 times in a row)Then you'll have an engineering menu where you can manually set the frequency, and be careful, if you're setting the wrong settings, you can crash the image.
How to return standard settings after a failure?
Features of Hertz Change for Different Signal Sources
Xiaomi TV can behave differently depending on which signal source is connected.
1.Television on air (DVB-T2).
When watching digital TV, the TV usually captures the frequency at 50 Hz (for Russia and Europe).
- 📶 Switch to another source (for example, HDMI).
- 🔄 Restart the TV.
- 📺 In the on-air TV settings, turn off the Autoset Frequency option (if any).
2. Connecting a PC or laptop.
If you use your TV as a monitor, the frequency may be reset due to incorrect settings in Windows or macOS.
- 🖥️ In Windows: Screen settings → Additional parameters → Frequency of update.
- 🍎 In macOS: System settings → Monitors → Optimize for (selecting a TV).
- 🔌 Use the cable. HDMI 2.0/2.1 and port marked ARC/eARC.
3. Game consoles (PS5, Xbox).
To activate 120Hz on PlayStation 5 or Xbox Series X|S:
Console settings → Screen and video → Update frequency → 120 HzMake sure that the settings of the TV are enabled Game Mode and ALLM (Auto Low Latency Mode).
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If the TV doesn't support 120Hz, but you want to reduce latency in games, activate Game Mode in the screen settings. This will reduce input lag even at 60Hz.
Resetting settings and alternative methods
If standard methods don’t work, you can try more radical solutions. Remember: these actions can lead to the loss of personal data (for example, saved Wi-Fi passwords or application settings).
1. Reset screen settings.
Returns all display parameters to factory ones, including the refresh rate:
Settings → About TV → Reset settings → Reset screen settings2. Completely reset the TV.
Delete all data, including installed applications:
Settings → About TV → Reset settings → Reset all settings →3. Manual firmware update.
If automatic updates do not help, download the latest firmware version from the official Xiaomi website and install it through the official Xiaomi website. USB:
- 📁 Download the firmware file (.zip format) for your model.
- 💾 Save it in the root folder of the flash drive (the file name should not contain Cyrillic).
- 🔌 Connect the flash drive to the TV and perform the update via Settings → On TV. → Updating the system → Update through USB.
⚠️ Warning: Do not interrupt the firmware update process - this can lead to "bricking" of the TV (completely inoperable).If the update is more than 20 minutes, disconnect the TV from the network, wait 30 seconds and try again.
Frequent Mistakes and How to Avoid Them
When trying to change hertz, users often face typical problems, and here are the most common ones and ways to solve them:
1. The TV does not save settings.
If the frequency is reset after rebooting, try:
- 🔄 Disable the option Energy saving in the screen settings.
- 📵 Remove the TV from the socket for 1 minute (full power reset).
- 🔧 Update the firmware of the remote control (via Settings) → remote).
2. The picture "twitches" or the sound disappears.
This can be due to the mismatch between the frequency of the source and the TV.
- 🔊 Check the sound settings: sometimes at 120Hz you need to turn on HDMI eARC.
- 🎵 In the source settings (for example, consoles) select PCM Dolby Digital instead of Dolby Digital.
- 🔄 Return to 60Hz and check if the problem persists.
3. option of gray color (inactive).
If the hertz change point is inactive, it means that the current signal source does not support the selected frequency.
- 📺 Only 50 Hz is available for terrestrial TV.
- 🎬 Built-in apps (such as Netflix) can block the hertz change.
- 🖥️ Older graphics cards don't support 120Hz via HDMI.
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If the TV doesn’t support the desired frequency but it’s critical for your tasks (like gaming), consider using an external adapter (like HDMI-to-DisplayPort) or upgrading the TV to a newer model.