Owners of budget Chinese head units based on Android regularly face a situation where the multimedia system begins to work incorrectly. The screen may freeze, the sensor may stop responding to touches, or the sound may disappear after waking from sleep mode. In such cases, standard shutdown methods familiar to smartphones often do not work or are simply absent from the interface. Chinese manufacturers use various modifications of the operating system that are very different from the stock one installed in phones. This means that the path to the reboot function may be hidden deep in engineering menus or require physical intervention. Understanding the architecture of the device helps you choose the right method for restoring functionality without the risk of damaging the electronics.
Chinese manufacturers car radios use various modifications of the operating system, which are very different from the stock one Androidinstalled in phones. This means that the path to the reboot function may be hidden deep in engineering menus or require physical intervention. Understanding the device architecture helps you choose the right method to restore functionality without the risk of damaging the electronics.
In this article we will examine in detail all possible options for restarting the system: from a soft soft reboot to a hard reset via a hidden button. You will learn how to use commands ADB for advanced management and what to do if the device is completely bricked. Follow the instructions consistently to minimize risks.
Soft reboot through the system interface
The safest and first method that you should resort to is searching for the restart function in the standard settings menu. However, the interface of Chinese radios is often confusing, and menu items may have non-standard names. Usually the option is located in the section responsible for general device parameters or factory settings.
Try to find the item Settings (Settings), then go to the section Factory settings (Factory Settings) or System. In some firmware, such as Junsun or Atoto, the reset button is placed in the top notification shade if you pull it down twice. If the system responds to touches, this method is preferable, since it correctly ends all background processes.
Sometimes the standard “Shut down” button in the menu actually only sends the device into deep sleep, and not reboots the system kernel. In this case, holding your finger on the power button on the touch screen for a long time can help, if this is emulated by the manufacturer. Don't forget that soft reset does not delete your data, unlike the full format.
⚠️ Attention: If the touch screen is completely unresponsive to touch, the software method through the menu cannot be applied. In this case, proceed to hardware reboot methods.
Before attempting a factory reset, be sure to write down the pin code for the “Factory Settings” section. Often this is 8878, 1234, 3368 or 1617, but it may differ depending on the processor model.
Hardware reset with the Reset button
Almost every Chinese car radio is equipped with a physical emergency restart button, designated as RST or Reset. It is a tiny indentation on the front panel of the device, usually located next to the memory card slot MicroSD, power button or connector USB. Activation requires a thin object, such as a straightened paper clip or a toothpick.
The procedure for performing a hard reset is extremely simple, but requires care. You must press the button inside the hole and hold it for 5-10 seconds. At this moment, the screen may go dark, and the device will emit a beep or simply blink the backlight. After releasing the button, the radio should automatically begin the process of loading the operating system.
It is important to understand the difference between a short press and a long hold. A short press can only turn off the screen, while holding it for more than 5 seconds initiates a hardware reboot (reboot) processor. If the device does not turn on the first time, repeat the procedure, making sure that you pressed the button contact, and not the plastic rim around it.
☑️ Correct reset with the Reset button
On some models, especially older versions with processors Rockchip, the Reset button can be combined with the function of turning off the power when held. If the device does not respond to pressing when the ignition is on, try performing the procedure with the engine turned off, but the radio turned on in accessory mode.
Reboot by turning off the power
The method of “hard” reboot by completely de-energizing is universal for any electronics, including Chinese head units. It is effective in cases where the system is frozen and does not respond to either the sensor or the Reset button. The essence of the method is to break the power circuit for a sufficient time to discharge the capacitors.
The easiest way is to remove the fuse responsible for the radio from the car's mounting block. Find the fuse diagram in the instructions for your car, remove the required element for 1-2 minutes and install it back. This is guaranteed to de-energize the device and force it to reboot when the ignition is turned on. An alternative is to disconnect the negative terminal of the car's battery, but this may reset the settings of the car's on-board computer.
Procedure for disconnecting the terminal:1. Turn off the engine and remove the key.
2. Loosen the nut on the negative terminal (black wire).
3. Remove the terminal from the battery terminal.
4. Wait 3-5 minutes.
5. Put the terminal back on and tighten.
A more complex but effective method for a permanent installation is to temporarily disconnect the yellow power wire (+12V Constant) from the back of the radio. It is this wire that is responsible for the memory of settings and clocks. Disabling it leads to a complete reset of the volatile memory, which often solves problems with “glitches” after an incorrect update.
⚠️ Attention: When the battery terminal is disconnected, the settings of the electronic engine control units and power windows may be reset. Be prepared for the need to re-adapt them (for example, training windows).
Using ADB commands to reboot
For advanced users who have access to USB debugging, there is a method to reboot via a computer. This method requires enabling the USB debugging (USB Debugging) mode in the radio developer settings. If this mode has been activated in advance, you can control the device even if the sensor is partially disabled.
You will need to connect the radio to your computer via a USB cable and install the drivers ADB. After identifying the device in the PC command line, you can enter a special command for a soft or hard reboot. This method is good because it allows you to see the system logs at the time of restart, which is useful for diagnosing the causes of the freeze.
| ADB command | Description of action | Risk of data loss |
|---|---|---|
adb reboot |
Standard soft reboot of the system | No |
adb reboot bootloader |
Reboot to bootloader mode (Fastboot) | No |
adb reboot recovery |
Reboot to Recovery Mode | No |
adb shell reboot -p |
Complete shutdown device power supply | No |
If the radio is not detected by the computer, check the cable and try other USB ports. Often Chinese devices require specific drivers, which are included on a flash drive or are available on the forum 4PDA. Using ADB gives the greatest control over the process, but requires basic command line skills.
Where can I find developer mode?
Go to Settings → About device (or System). Find “Build Number” and quickly click on it 7 times in a row. A notification will appear that you have become a developer, and a new section will appear in the menu to enable debugging.
Reboot via Recovery Mode
Recovery mode (Recovery Mode) is a special diagnostic section hardwired into the device’s memory separately from the main operating system. Logging into it allows you to reboot, even if the main one Android is completely damaged. On Chinese radios, this mode is often entered using a combination of buttons on the case or through the menu when the device is turned off.
Standard entry method: turn off the radio (if possible), then hold down the button Reset and, without releasing it, press the Power button. Hold both buttons for a few seconds until a menu appears on a black background with text. Navigation in this menu is usually carried out using the volume buttons on the steering wheel or on the front panel, and the selection is confirmed by the power button or by briefly pressing Reset.
In the Recovery menu, select the item reboot system now, using the volume buttons to move the cursor. This method reboots the system kernel, bypassing the user interface. If the system is critically damaged, here you can select the item wipe data/factory reset, which will return the device to its factory state, deleting all user data and applications.
⚠️ Attention: The “Wipe data” item deletes all your settings, saved tracks and installed applications. Use it only as a last resort when other methods do not help.
Recovery mode is the last software line of defense before completely flashing the device. If rebooting from here does not help, the problem is most likely hardware.
Frequent problems and their solutions
Users of Chinese radios often encounter the fact that the device reboots by itself while driving or when playing a video. This could be due to an overheated processor, insufficient power, or a software conflict. If a reboot does not solve the problem, you need to look for the underlying cause of the problem.
One of the common reasons for a cyclic reboot is a conflict of installed applications. Remember which application you installed last before the glitches appeared. Try removing it through Safe Mode or the Recovery menu. It is also worth checking the quality of the audio recording, as some codecs can cause malfunctions in the audio driver, leading to a system crash.
Power problems often appear when starting the engine, when the starter creates a voltage sag. If the radio reboots at this very moment, check the reliability of the ground connections and the integrity of the fuses. It may be necessary to install an additional capacitor in the power supply circuit of the head unit to smooth out voltage surges.
⚠️ Attention: Interfaces and menu item names may differ depending on the firmware version and manufacturer (Teyes, Junsun, Hizpo, etc.). Always check the documentation for your specific model.
If the radio gets hot and freezes, check the operation of the cooling fan (if there is one) and clean the air vents from dust. Overheating is a common cause of unstable operation of Chinese processors.
Frequently asked questions (FAQ)
What to do if the radio is stuck on the logo when turned on?
Try to perform a hard reset with the Reset button, holding it for 15-20 seconds. If this does not help, go to Recovery mode and select Wipe Data. In extreme cases, you will need to flash the device via an SD card.
Is it possible to reboot the radio from the phone?
Yes, if USB debugging is enabled on the radio and it is connected to the same Wi-Fi network as the phone. There are applications like “ADB Wireless” that allow you to send reboot commands remotely.
Why do the time and date get lost after a reboot?
This is a sign that the internal CMOS battery (tablet) on the radio board is low or missing. When there is a complete blackout, the clock is reset. It can be solved by replacing the battery on the board or constantly supplying power to the yellow wire.
How to enter the engineering menu to reboot?
Usually this is done through the “Factory Settings” application by entering a PIN code. Popular codes: 8878, 1234, 3368, 0000, 1617. The code depends on the processor (MTK, Rockchip, Allwinner).
Is it safe to frequently reboot the radio using the Reset button?
Yes, this is a standard function provided by the manufacturer for emergencies. However, frequent use may indicate firmware instability or power problems that should be resolved.