Owners of modern TEYES multimedia systems are often faced with the need to identify their device. This may be necessary when purchasing additional accessories, ordering specific cables to connect the camera, or when trying to update the software. Model TEYES CC2L Plus is one of the most popular Android radios on the market, but searching for its unique identifiers can confuse an inexperienced user.
There are several types of codes that you may be interested in: serial number (SN), MAC address, firmware version (Build Number), or special feature activation code. Understanding the difference between them is critically important, since entering incorrect data in the service menu can lead to the inoperability of individual modules. In this article we will analyze all the ways to obtain this information using standard means and through the engineering menu.
Before you begin manipulating system settings, make sure that the radio is working stably. Backup important data in this case is impossible, since we are working with system identifiers, but caution will not hurt. If you are planning a flashing, have the exact model code (for example, CC2L against CC2L Plus) is a prerequisite for a successful procedure.
Finding information in the About Tablet menu
The easiest and safest way to find out basic information about your device is through the standard Android settings menu. This displays data that does not require a deep dive into system files. To access them you need to go to the section Settings, and then select About the tablet or About the device.
In the window that opens you will see a list of characteristics. Pay attention to the fields Model, Build number and Android version. It is the Build Number that often contains key information about hardware modifications. For example, the line might indicate TEYES_CC2L_1G_16G_20221101. The last digits here indicate the firmware compilation date, and the prefix confirms the model.
⚠️ Warning: Do not try to change the values in the “For Developers” menu if you are not sure of your actions. Resetting debugging settings may block the ability to install applications from unknown sources.
Often users confuse the firmware version with the MCU version. MCU (Micro Controller Unit) is a microcontroller responsible for the operation of the steering wheel buttons, backlight and CAN bus. Its version is updated separately from the main operating system. If you are looking for an order code for a compatible CAN-bus cable, you may need the MCU version, which is also displayed in this section or in the factory settings menu.
Why are the firmware versions different?
Firmware versions may vary depending on the region of sale and production date. Chinese versions (CN) and global versions (GL) have different identifiers in the build number, which is important to consider when searching for updates on the forums.
Using the Factory Settings
To obtain more detailed technical information, including the exact device code for firmware, you must enter the factory menu. This is a hidden section of the system intended for installers and service engineers. Logging into it requires entering a special numeric password, which varies depending on the software version.
To get to this menu, follow the path Settings → Factory settings (or Factory Settings). The system will ask for a password. The most common codes for TEYES CC2L Plus: 8888, 1234, 0000 or 1617. After successful input, an interface with the TEYES logo and many tabs will open.
You are interested in the tab Device information (Device Info) or Version (Version). Here's the full specification:
- 📱 Model: Exact model name, e.g. TEYES CC2L.
- 🔢 SN: Device serial number, unique for each piece of equipment.
- 📡 MAC: MAC address of the Wi-Fi module, required for binding in some cases.
- 💾 Flash: Amount of built-in memory and type of flash memory.
The factory menu is the only source of reliable information about the type of resistive screen and port configuration, which is critical when replacing the display.
In the same section, the factory reset function is often available. Be extremely careful: reset via factory menu (Factory Reset) deletes all user data, navigation maps and saved Wi-Fi passwords. Use this function only if a standard reset via the Android menu does not help resolve errors.
Identification via system properties (ADB and terminal)
For advanced users who are not afraid of the command line, there is a way to obtain the device code through debugging via ADB (Android Debug Bridge). This method allows you to see the “raw” data from system files build.prop, which are not always displayed correctly in the graphical interface.
First you need to activate debug mode. Go to Settings → About tablet and press 7 times quickly Build number. The message “You have become a developer” will appear. Then in the “For Developers” menu that appears, enable USB Debugging.
Connect the radio to your computer via a USB cable (usually a port labeled USB or AUX, depending on the model). Using the ADB Tools program on your PC, run the command to display the properties:
adb shell getprop | grep ro.product.modelThis command will return the exact device model registered in the system. You can also find out the serial number with the command adb shell getprop ro.serialno. This method is useful if the graphical interface of the radio is “buggy” and does not allow you to read the information visually.
⚠️ Warning: Installing ADB drivers on a Windows computer may require disabling driver signature verification. Do this only at your own risk when downloading tools from official sources.
In addition, through the terminal (if a terminal emulator is installed on the radio), you can execute the command cat /system/build.prop. In the text that opens, look for lines starting with ro.product.model or ro.build.fingerprint. This will give you a complete understanding of exactly what modification TEYES CC2L Plus installed in your car.
Physical markings and documentation
If software methods are not available (for example, the device does not turn on or the screen is broken), the device code can be found on the physical label. It is usually located on the metal casing of the radio. To get to it, the device will have to be removed from the car panel.
Removing the TEYES CC2L Plus usually does not require special pullers, as the housing is held in place by latches and screws. However, before removing it is necessary disconnect the negative terminal of the battery car to avoid wiring short circuit.
There should be a sticker with a barcode on the back panel or end of the case. It states:
- 🏷️ P/N: Part Number - product article.
- 🔢 S/N: Serial number matching the software one.
- 📅 Date: Production date.
Keeping the box and documentation from the device is a good habit. TEYES often comes with short instructions in English and Chinese, where a sticker with basic data can be written or pasted on the first page. If you bought a radio on AliExpress, check your order history: the seller sometimes indicates the exact model in the product title or in correspondence.
Take a photo of the sticker from the back immediately after purchase and save it to the cloud. This will save time if you need to look for firmware a year later when you no longer remember the exact modification.
Code and version correspondence table
Understanding the TEYES markings can be confusing as the manufacturer uses different codes for different markets and production periods. Below is a table that helps decipher the main designations found in the name of the model or firmware.
| Designation | Decoding | Where is it used? |
|---|---|---|
| CC2L | Basic model with DSP and 4G | Model name, firmware |
| PLUS | Improved version (often more RAM) | Marketing name |
| S60 / S90 | Processor type (Unisoc / Rockchip) | Specifications |
| GL / CN | Global / China | Firmware region |
| MCU | Micro Controller Unit | Hardware management |
It is important to distinguish global and Chinese versions. Global version (GL) has pre-installed Google Play, a multilingual interface (including Russian) and tuned radio frequencies. Chinese version (CN) may require manual flashing for full operation in the CIS. The device code will help you understand which version you are holding in your hands.
If you see the designation in the build number S90, this indicates a more powerful processor compared to the base ones S60. This affects the speed of the interface and the ability to install heavy navigation applications. When searching for update code, make sure that the new firmware is specific to your processor type.
Common search problems and their solutions
Users often encounter a situation where the “Model” field displays a generic value, for example, Android or TEYES, without specified modification. This may occur after a failed update or factory reset when the system identity file is corrupted.
In this case, it is recommended to perform a full reset through the recovery menu. To enter it you need to hold down the button Reset (usually a small hole on the case) and simultaneously press the power button or Vol+. From the recovery menu, select Wipe Data/Factory Reset.
⚠️ Attention: Resetting through the recovery menu deletes all data without the possibility of recovery. Make sure you have internet access to set up your device again.
Another common problem is a discrepancy between the code in the menu and the code on the manufacturer’s website. TEYES frequently updates its line, and the model CC2L Plus may have different revisions of the motherboard. If you are looking for firmware, always refer to build number (Build Number), and not just the model name. Downloading firmware from a different revision may lead to “bricking” the device.
☑️ Check before flashing
If all else fails, contact the seller or the official TEYES support group on social networks. Provide them with a photo of the factory menu and stickers from the case. Their specialists will be able to identify the device by MAC address or serial number and provide a link to the latest software.
FAQ: Frequently asked questions
Where can I find the activation code for free 4G?
A 4G activation code is usually not required for TEYES CC2L Plus, as the module works immediately after inserting the SIM card. If Wi-Fi hotspot activation is required, the code can be found on the sticker inside the box or requested in the TEYES Aid app on your phone by scanning the QR code from the Wi-Fi settings menu.
Can I change the device serial number?
Technically change SN (serial number) is only possible by flashing the corresponding memory section, but this is highly not recommended. This may disrupt the operation of the licensed software and make warranty service impossible. Besides, it makes no practical sense for the average user.
What to do if the radio shows the wrong model?
If you receive a “Wrong Model” or “Check Model” error when updating, this means that you downloaded the firmware for the wrong board revision. Return to the “Factory Menu” section, write down the full build number and look for an update file that strictly corresponds to these numbers. Don't try to force the installation.
How to find out the device code if the screen does not work?
If the screen does not work, you will not be able to programmatically find out the code. The only option is to physically dismantle the head unit and look for a sticker on the metal case. You can also try connecting a USB keyboard and, if the system boots blindly, try to get into the menu (by touch), but this is difficult without visual control.