Stephhhh - Thank you, thank you, thank you. The files you provided have worked a treat on my 2012 Yaris' PZQ60-00540 audio system. I formatted an SD card FAT32 and copied the 4 files onto it. Then with ignition completely off inserted the SD card. Turned engine on, waited 10-20 seconds and to my great surprise and relief, the Toyota screen appeared and everything worked perfectly!! (Back story: The audio system has been completely blank and unresponsive for the last two weeks following a regular service at Toyota Camberwell - who after 'checking the unit' decided it was just coincidence that the unit failed at the same time as the service and quoted $1000 for a new unit. $1000! good grief.). Thanks again, you have made my year.
