Dursun Tosun in Xiaomi: a secret function or a system error?

If you own a TV or other Xiaomi device (such as a Mi TV, Redmi Smart TV, or even a Mi Box), you may have encountered the mysterious term "Dursun Tosun" in your settings, system logs, or firmware updates. At first glance, it looks like a developer name, internal code, or even a bug. But what is really behind this phrase?

Dursun Tosun is not a feature name in the usual sense, but rather a technical artifact that appears in certain situations. It is not mentioned in the official documentation of Xiaomi, but is actively discussed in forums and user communities. In this article, we will understand where this term comes from, what it is associated with and what to do if you see it.

It is important to note that in 90% of cases, the appearance of the “Dursun Tosun” is not a critical error, but can signal that the system is not working correctly – especially if it is accompanied by a malfunction of the TV or console.

What does “Dursun Tosun” mean in Xiaomi?

To start with, Dursun Tosun is not a feature, but the name of an engineer or test account that was used to develop firmware for Xiaomi devices, which occurs most often in two contexts:

• 📝 System logs: When you view service logs (for example, through adb logcat), a line may appear mentioning Dursun Tosun as the author of the commit or debugging message.
• 🔄 Update process: When a firmware load fails, a message such as “Error: Dursun Tosun build failed” can be displayed on the TV screen».
• 🛠️ Hidden menus: in the engineering mode of some Mi models TV This name appears as a test build label.

Why is this happening? Because Xiaomi (like many other vendors) uses internal firmware test builds before release, the name Dursun Tosun is most likely an alias or the real name of the software builder. If the device for some reason hangs on the test version or can’t upgrade to the final version, the user sees that name on the screen.

Interesting fact: Dursun Tosun is a common surname and first name in Turkish, and it may be a developer from Xiaomi Turkey, but there is no official confirmation of this.

When and why is the "Dursun Tosun" coming?

The term is almost always associated with abnormal situations in the operation of the device.

The most common reason is a flawed firmware update, such as if the Xiaomi Mi TV 4S tries to download the update over the air, but the servers return the test build instead of the stable one, in which case a message like:

Update failed: Dursun Tosun build 20230515 (test)

Another possible reason is manual interference with system files (e.g., through ADB or modified firmware), in which case Dursun Tosun may be the author of the changes.

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If you saw the Dusun Tosun once and the TV is working normally, it's probably a residual debugging build mark. Restart the device and check for updates.

How to remove Dusun Tosun from the screen of Xiaomi TV?

If the label is constantly appearing or interferes with the operation of the device, use one of the methods below: start with the simplest and move to radical measures only if necessary.

1. Reboot the device

In half of cases, the problem is solved by a banal reboot:

• 🔄 Press and hold the Power button for 10 seconds.
• 🔌 Turn off the TV for 1 minute, then turn it on again.

2. Reset to factory settings

If the reboot didn’t help, reset:

1. Go to Settings → About TV → Reset settings.
2. Enter. PIN-code (default 0000 or 1234).
3. Confirm the reset and wait for the reset.

Turn off the TV from your Mi Account (if tied)|Write down your current audio and image settings |Prepare your remote (may need a couple of buttons)|Make sure the TV is connected to the internet to reconfigure-->

Manual installation of firmware

If the reset does not help, you will have to reflash the TV manually:

• 📥 Download the official firmware for your model from Xiaomi support site.
• 💾 Copy the file. update.zip flash drive (format) FAT32).
• 🔧 Insert the flash drive into the TV, go to Settings → Update of the PO → Update through USB.

Mi TV Stick or Mi Box models may require firmware via Fastboot (see 4PDA or XDA Developers forums for instructions).

Xiaomi models, where the most common "Dursun Tosun"

Not all Xiaomi devices will encounter this problem, most often it occurs on the following models:

• 📺 Xiaomi Mi TV 4S (especially the 2018-2020 version)
• 📺 Xiaomi Mi TV 4A (Budget models with an Amlogic processor)
• 📺 Redmi Smart TV X (series 2021–2022)
• 🎮 Mi Box S and Mi TV Stick (Stop boxes for Android) TV)
• 🖥️ Xiaomi Mi Desktop Monitor (monitors with built-in Android)

The reason is the firmware architecture: these models use a modified version of Android TV, where test builds can seep into public updates. For example, Mi TV 4S 55 owners often complain about the appearance of Dursun Tosun after automatically upgrading to MIUI TV 2.0.60+.

On newer models (such as the Xiaomi TV Q2 2023 or Redmi Smart Fire TV), this problem is less common due to improved update control.

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If your model is released after 2022, it’s likely that the Dusun Tosun is a residual log marker, not a critical bug. On older TVs (2018-2020), this may mean manual flashing.

Is the Dursun Tosun device dangerous?

The mere mention of this term does not harm the television or the console, but it can be a symptom of more serious problems:

⚠️ Attention! If the TV is constantly restarting, not turning on or emitting errors when running applications, this is a sign of damage to system files, in which case a complete firmware reflash or contacting the service is required.

On the other hand, if you see this name once (for example, in logs or when you upgrade), but the device is stable, you don’t have to worry.

Another caveat: some forums claim that Dursun Tosun can appear when using informal firmware (for example, custom builds based on LineageOS for Mi Box), in which case it is recommended to return to stock firmware.

How to avoid problems with Dusun Tosun in the future?

To minimize the risk of experiencing this problem, follow simple rules:

• 🔄 Do not interrupt updates: if the TV is updated, do not turn it off or turn off the Internet.
• 📥 Download firmware only from official sources: avoid third-party sites where there may be modified (and potentially dangerous) builds.
• 🛠️ Do not change system files unnecessarily: if you are not an experienced user, do not use them. ADB or root rights for software modification.
• 🔍 Check logs for suspected failures: if the TV is unstable, connect to the network. ADB and look at the magazines (logcat).

If you like to experiment with firmware, create backups before any changes, and you can use utilities like Mi Flash Tool (for TVs) or TWRP (for Mi Box consoles).

⚠️ Attention! Some Xiaomi Mi models TV An attempt to roll back on the old firmware can result in a "brick" (complete failure) due to a bootloader lock.Before downgrad, make sure your model supports this procedure.

For Mi TV Stick or Mi Box owners, it’s helpful to know that if a device stopped turning on after the Dursun Tosun came along, it can often be restored via Fastboot mode with the command:

fastboot flash recovery recovery.img


fastboot reboot

But it will require a computer and a USB OTG cable.

Frequent Questions About Dusun Tosun in Xiaomi