Hello. Yes yes. Topic back from the dead. I have spent maybe 4 hours on this site now, after my AVH-4200NEX got the dreaded black "Software Error" Screen.
Learned about the development mod/backup, clicked through all 43 pages, found the mega download thread with all the european version images (F60,F70,F77,F80), joined the AVIC Hacking Slack chat, and even found a thread on Reddit on how to disassemble an AppRadio4.
My error first happened two weeks ago with my new Iphone8+ plugged in with Apple Maps running and I was choosing a song in Spotify. (BTW Android Auto is far superior to