Before starting, verify if an update is actually needed by checking your existing version: pioneer-car.eu button on your unit. (gear icon) -> Scroll down and tap System Information Firmware Information to see the current version number. Step 2: Prepare the USB Drive Pioneer Support Page or your regional Pioneer site (e.g., Pioneer Australia ) and search for DMH-Z5350BT Download the latest firmware ZIP file to your computer. Format your USB drive
A progress bar will appear. The screen may go dark or reboot during this process; this is normal.