Pioneer DEH-X4900BT won't update firmware via USB. Formatted USB fat32 and NTFS. Unit just sits telling me version number won't go anywhere. Currently have 8.10 trying to update to 8.17. I'm using 8g USB stick. Thank you for any assistance.
According to Pioneer FAT32 is required. As painful as it sounds you probably need to call Pioneer Customer Service toll free at 1-800-421-1404,
Monday through Friday, 7:30 AM - 11:30 AM and 12:30 PM - 4:00 PM (Pacific Time).