Tap . If a newer version of the Jcac10003-oc2-v1.0 series is available, it will download and install automatically. 2. Manual USB Update
Look for a file often named kupdate.zip or similar, specific to the AC8227L chipset.
Copy the update files to the root directory of your FAT32-formatted USB drive. Do not put them in a folder.
Insert the USB into the head unit. The system should automatically detect the update and prompt you to start.