Look for the line. It typically starts with letters like MTCE , GS , KY , or HA , followed by a string of numbers and letters indicating the manufacturer and build date.
If you bought the unit from a reputable brand like Xtrons, Joying, or Dasaita, contact their customer support. They will send you the exact, verified MCU file via a Google Drive or Mega link.
Look for a file typically named mcu.img or dmcu.img . It must match your unit's manufacturer (e.g., MTCD, MTCE, KLD, HA). USB/SD Drive: Use a drive formatted to FAT32 . rkpx3 mcu update
To update the MCU (Microcontroller Unit) on a Rockchip (often referred to as PX3) Android head unit, you generally need to match the specific file name and format required by your unit's manufacturer. The MCU is a separate computer from the Android OS that controls hardware like the radio, Bluetooth, and DVD player. Preparation Checklist Identify Your Version : Check your "About Device" settings. Android 7.1 (Nougat) : Typically uses for system and mcuupdate.bin Android 4.4 (Kit Kat) : Often uses update.img USB thumb drive MicroSD card (32GB or smaller preferred). Formatting : The drive be formatted to MCU Update Procedure How To: MCU Update for 7.1 vertical screen head units
Commands commonly used (examples):
Updates often fix bugs related to CAN-bus integration, button mapping, and hardware stability.
Unzip the update file you received from your manufacturer and drag the mcu.img (or update.img ) file directly onto the of the USB drive. Do not put it in a folder. Step 4: The Installation Process Look for the line
The manufacturer code (e.g., HA = HotAudio, GS = Xtrons/GS, KD = Klyde, MX = Witson). You must match these letters exactly. V3.40: The firmware version number. Step 2: Source the Correct MCU Firmware
Check your current version in Settings > About/Information . Rapidly tapping the "MCU Version" field (often 5 times) may reveal extended details. Preparation for Update How To: MCU Update for 7.1 vertical screen head units They will send you the exact, verified MCU