I'm after fitting my DSX-A416BT car stereo and it's on firmware M 10 /S 34. I want to update to M 12 / S 34 so I downloaded and unzipped the file to the root of my 4GB USB drive. My problem is that the instructions on the firmware download page says

"Copy the "DSX-A416BT_M12S34.U88" file and "DSX-A416BT_DSP_M12S34.up6" file under the root directory of the USB device...".

I've unzipped the file and there is only one file - there is no "DSX-A416BT_DSP_M12S34.up6" file.