Without the official installation disk, the unit is largely unusable for navigation. Possible alternatives:
Check the bottom of your DRZ09 unit. Is there a small white sticker that says "ROM Ver 1.02"? If not, stop everything and find that installation disk now.
Follow this process to insert the disk and restore functionality to your Carrozzeria head unit. Step 1: Power On the Vehicle Carrozzeria AVIC DRZ09 Navigation-installation disk
Note: The AVIC-DRZ09 is designed for the Japanese market, so menus are primarily in Japanese. If you'd like, I can help you find:
If power fails during this window, you will brick the unit permanently. Without the official installation disk, the unit is
Websites like Nengun Performance, RHDJapan, or Blackhawk Japan occasionally have "dead stock" or can source from Japanese repair shops.
If you are facing persistent issues with the error or if the unit continues to show a "Software update failed" message, it is recommended to: If not, stop everything and find that installation disk now
If you buy a used DRZ09 from Yahoo Auctions Japan or an importer, the previous owner likely erased the internal Flash ROM. To re-activate the nav system, you need: