Install "CPU-Z" from the Play Store. If the kernel version is 3.18.x but it shows API 29, it's likely a real update. Older kernel 3.10.x means fake.
So, if you can't change your Android version, what exactly are you updating? A "firmware update" refers to updating the system image, which includes the operating system's core files, drivers, user interface, and pre-installed apps. These updates can be crucial for:
Unzip the downloaded files using a tool like 7zip or WinZIP. yt9217b firmware update android 10 upd
This isn't just a minor technicality; it's a fundamental hardware limitation. Car head units are not designed like smartphones. The core system-on-chip (SoC), drivers, and low-level bootloaders are often closed-source and locked to the Android version they were manufactured with. While you can update the system software (the firmware) or the MCU (Microcontroller Unit, which handles things like CAN bus integration and button controls), the underlying Android version itself cannot be changed.
Copy the extracted update files (usually containing files like update.zip or specific boot images) directly into the of the USB drive. Do not place them inside a folder. Step 2: Connect the USB to Your Stereo Install "CPU-Z" from the Play Store
You can update either via a local USB file or through the device's system menu if an OTA (Over-The-Air) update is available.
Before attempting any update, document your current setup. Go to and note: So, if you can't change your Android version,
Connect only to the main 4-pin or 6-pin direct rear USB cable . Avoid front panel auxiliary ports or media hubs. Method 1: Local USB OTA Update (Recommended)