Replacing the logo bootloader on a car multimedia system is one of the easiest ways to personalize the interface of your device. Often the stock manufacturer's badge looks boring or doesn't match the theme of your car, so owners tend to replace it with the emblem of the car brand or their own unique design. This process affects the system partition, which is responsible for visual display until the operating system is fully loaded Android.
However, before proceeding with modifications, you need to understand that there are several types of logos. There is a picture that appears immediately after turning on the power (Boot Logo), and there is an animation of the system booting itself (Boot Animation). In this article we will focus on the first option, since this is what users most often want to change Head Units. The procedure requires caution, but if you follow the algorithm of actions, the risk of damaging the device is minimal.
To successfully implement your plan, you will need to prepare a special graphic file and select a method for implementing it into the firmware. Some radios allow you to do this through the standard settings menu, while others require you to use engineering mode or connect to a computer. We will consider all current options so that you can choose the right one for your model.
Preparation of a graphic file and image requirements
The most critical stage is the preparation of the image itself. An incorrectly selected format or resolution may result in the system simply not recognizing the file or displaying it distorted. In most cases, Chinese radio manufacturers use specific requirements for files that differ from the standard rules for smartphones.
Usually an image is required in the .bmp or .jpgformat, but there are also rarer options like .png with a certain compression. The picture resolution must strictly match the screen resolution of your device. If you have a display 1024x600, then the logo must have exactly these dimensions, otherwise it may stretch out or take up only part of the screen.
⚠️ Attention: Using images with a transparent background (alpha channel) often results in a black square appearing instead of the logo. It is best to use a solid background that matches the color of the screen frame.
You can find a ready-made logo on specialized forums or create it yourself in a graphics editor. If you take the image yourself, make sure it is saved in 24-bit color without additional layers. The file name is also important: often the system looks for a file with the name logo.bmp, boot.bmp or splash.bmp.
Before saving the file, reduce its size to the minimum possible without losing quality. Files weighing more than 2-3 MB may not be loaded into the system partition due to bootloader memory limitations.
Replacement method through the standard settings menu
The safest and simplest method is available on modern firmware versions, where the developers have provided a customization function. This method does not require obtaining root access or connecting complex tools. You just need to find the corresponding item in the menu and specify the path to the file on the internal drive.
The algorithm of actions usually looks like this: connect the flash drive with the prepared image to the USB port of the radio. Then go to the settings section, which may have different names depending on the shell. Look for tabs with names Factory settings, Factory Settings or System.
Inside the menu, find the item responsible for the logo. It may be hidden under the name Boot Logo, Car Logo or Startup image. After selecting this item, a file manager will open where you will need to specify the path to your image on the flash drive. The system will prompt you to confirm the replacement, after which it will require a reboot.
- 🚗 This method works on 80% of modern radios with Android 8.0 and higher.
- 💾 The file should be in the root of the flash drive or in a folder with a clear name on Latin.
- 🔄 After confirming the change, the device will automatically reboot to apply the settings.
If the menu does not have an explicit item for loading a picture, try entering the password in the factory settings section. Popular combinations: 8878, 1234, 3368 or 0000. In the extended menu, hidden functions often appear that are inaccessible to the average user.
Using engineering mode and applications
In cases where the standard menu does not provide the necessary options, special engineering utilities come to the rescue. Many Chinese radios come pre-installed with an application MCU Update or similar services that allow you to update microcode and system resources. This is a more advanced level of interference with the operation of the device.
First, you will need to install an application to manage the logo, if it is not built into the system. Often a app Logo Changer or utilities from the chipset manufacturer are used, for example Zc MOD. These applications may request superuser rights, so make sure that debug mode is activated on your device or that you have already obtained root access.
The replacement process through the app looks like this: launch the utility, select the tab Logo or Boot Image. Next, click the file selection button and specify the path to your image on the internal storage or SD card. After selection, the system will show a preview, and if everything is correct, the button Apply will become active.
⚠️ Attention: When using third-party applications, make sure that they are compatible with your version of Android. Installing a utility from Android 4.4 on an Android 10 system can lead to process conflicts and freezes.
Sometimes you need to not only select a file, but also specify the encoding type. In some utilities there is a choice between Raw, JPG and BMP. Selecting the wrong encoding type will result in you seeing a black screen instead of a picture the next time you reboot. Carefully study the documentation for a specific utility before pressing the record button.
☑️ Check before recording the logo
Replacement via Recovery mode and file manager
This method is universal and suitable for most devices running on chips Rockchip, Allwinner or Intel. It involves directly replacing the system file in the bootloader section. To do this, you will need a file manager with access to system directories, for example Root Explorer or ES Explorer with root mode enabled.
The essence of the method is to find the original logo file and replace it with your own, preserving the name. Typically, system logo files are located in the directory /logo, /res/images or in the root of the partition /system/media. The exact path depends on the firmware manufacturer and may differ even within the same radio model.
First make a backup copy of the original file. Copy it to internal memory or a flash drive under a different name. This is critically important: if the new file does not work, you can always return the original and restore system functionality. After creating a backup, rename your image exactly like the original file and copy it to the system folder with a replacement.
| File path | Device type | File name | Risk of error |
|---|---|---|---|
/logo/logo.bmp |
Rockchip RK30/31 | logo.bmp | Low |
/system/media/bootanimation.zip |
Universal Android | bootanimation.zip | Medium |
/res/images/splash.jpg |
Some MTCE | splash.jpg | High |
/dev/block/mmcblk0p1 |
Direct Write (DD) | image.img | Critical |
After replacing the file, you need to change the access rights (Permissions). Make sure that the new file has the same rights rw-r--r-- (644) as the original. If the rights are different, the system may block reading the file at the download stage, which will lead to a bootloop error or a black screen.
What to do if the file manager does not see system folders?
If you do not see folders like /system or /logo, then your file manager does not have root access. Try installing the SuperSU or Magisk application, or use the built-in terminal to mount the partition in write mode with the command mount -o remount,rw /system.
Advanced method: using ADB and the command line
For experienced users who are not afraid to work with the console, there is a method for replacing the logo through debugging ADB (Android Debug Bridge). This method gives maximum control over the process and allows you to bypass the limitations of graphical interfaces. You will need a computer, a USB-male-to-USB-male cable and installed ADB drivers.
Connect the radio to the computer and activate USB debugging in the developer menu. Open the command line on your PC and check the connection with the command adb devices. If the device is detected, you can start sending the file. First, upload the image to the temporary directory of the device.
adb push my_logo.bmp /sdcard/my_logo.bmpNext, you need to obtain superuser rights on the device itself via the console and mount the system partition in write mode. The command may look like adb shell su -c "mount -o remount,rw /system". After this, copy the file from temporary storage to the logo system folder, after renaming it.
The final step is the reboot command. Make sure you do not interrupt the power supply to the device at this time. If everything went well, the next time you turn on you will see a new image. This method is especially useful if the graphical interface of the radio is unstable or blocked.
- 💻 Requires a PC and basic knowledge of working with the command line.
- 🔌 You must use a high-quality USB cable for stable data transfer.
- ⚡ The risk of "skipping" is higher than when using menu, but lower than with direct firmware.
⚠️ Attention: Interfaces and commands may vary depending on the Android version and chip manufacturer. Before entering commands, check the documentation for your specific processor (Rockchip, Allwinner, MediaTek).
The ADB method is the most reliable for advanced users, as it allows you to control each stage of file recording and see error logs in real time.
Possible problems and ways to solve them
Even with With careful preparation, unforeseen situations may arise. The most common problem is a black screen when turned on. This means that the system could not read the logo file or it is in an incorrect format. In most cases, the radio will still boot into the Android system, just without a picture.
If, after replacing the logo, the device freezes on the splash screen and does not boot further, the file size may exceed the permissible bootloader memory limit. Try reducing the image resolution or converting it to a more compressed format. Also check whether the file itself was damaged during copying.
In the worst case, if the device has stopped responding to clicks and shows no signs of life, a flashing via a computer will be required. To do this, use the utility Android Tool (for Rockchip) or PhoenixSuit. You will need a firmware dump or an official update file from the manufacturer. Connecting in recovery mode is usually done by holding down the button Reset (hidden in the hole on the panel) when connecting the power cable.
Sometimes users encounter a situation where the logo changes, but immediately after that the standard Android animation appears. This is normal, since we changed the static manufacturer logo, and not the OS loading animation. To replace the animation, you need to edit the archive bootanimation.zip, which is a more complex procedure.
How to enter Recovery mode without buttons?
If your radio does not have a physical Reset button or it does not work, try the adb reboot recovery command. If ADB does not work, you can remove the back cover (if possible) and close the contacts of the power button on the board with tweezers when power is applied.
Frequently asked questions (FAQ)
Is it possible to return the factory logo back?
Yes, it is possible. If you made a backup of the original file before replacing, simply copy it back to the system folder. If there is no backup, you will need to download the firmware for your radio model, unpack it on your computer and extract the original logo file from the system image.
Why does my logo appear stretched or upside down?
This is due to a mismatch in image orientation or resolution. Radio screens can have different orientations (landscape or portrait). Try rotating the image by 90 or 180 degrees in a graphics editor and saving it again, strictly observing the native screen resolution.
Do you need to do a Factory Reset after changing the logo?
In most cases, a reset is not required, the changes are applied immediately after the reboot. However, if you notice glitches in the interface or the logo is not displayed, performing a hard reset can help clear the cache and correctly initialize the new file.
Is it safe to change the logo on a new radio with a warranty?
Software replacement of the logo through the settings menu usually does not affect the warranty. However, obtaining root access or interfering with system files via ADB may be regarded by the service center as a violation of the terms of use. Be careful if the device is still under warranty.
Where can I download ready-made logos for my car brand?
Ready images can be found on specialized forums, such as w3bsit3-dns.com or XDA Developers, in threads dedicated to your radio model. There are also logo databases where users share files for BMW, Mercedes, Toyota and other brands.