I'm bought B9012 Premium Audio unit from eBay.uk to upgrade my 2010 Avensis T27 with standart audio (Part Code : 86120-05150 or Unit Name : W53828) I'm installed new unit myself without any major troubles.. :) (If anyone ask "how to remove..." things for dashboard, please check "Toyota Service Information" site for helpfull free .pdf accessory installation manuals..) Everything works like a charm except BT phone connection :( As seen on pictures only one plug don't fit new unit... Maybe it