AVIC-F840BT
I am really greatful for your good work, many thanks, I was at the end of my proverbial tether, having tried every test mode key I could find and looked at the condi hack but stayed clear as having just spent £102 on a touchsreen and the time to install it I was not in the mood to "Brick it". I discovered the bonus feature of a set password after removing to fix the display and being a company liquadation vehicle bought secondhand I had no chance to find the owner!
I am super greatfull, Thanks again, you have made my week.