A. What you need: A-1. a blank SD/Mini SD card, format: FAT32 A-2. a S100 firmware for your head unit, you can get the firmware from the product page of your head unit.
B. Patch Update :
B-1. Download the firmware from the product page or send an email to firstname.lastname@example.org to get the firmware files.
B-2. Unzip the file you got.
B-3. Copy the files into the root directory of the SD card.
B-4. Insert the SD card into GPS card slot (NOT SD DVD SLOT).
C. Firmware Update:
C-1. Reboot the head unit. It will upgrade automatically.
C-2. Upgrade Eboot and NK, the screen will be red:
C-3. Adjust the screen:
C-4. Copy the apps:
C-5. Upgrade flash. The buzzer will ring all the time. The screen will be black or blink.
C-6. It will display “Complete 100%” and “**Mission Accomplished! Please pull out of the card!”. Remove the SD card, the unit will restart automatically.
PS: If you find something not working right, like steering wheel controls or canbus, try first pushing the reset button and reconfigure them.