Boss Audio BV9560B task manager?how to get behind the stereo interface

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http://www.linuxquestions.org – Don't know if this is the right place to ask such a question but I tried to hook up a keyboard via USB to my Boss car stereo thinking that I could just ctrl+alt+delete my way into the linux based GUI but apparently it is not that easy to get behind the scenes.What I would like to do is be able to take control over the unit whenever I want, to load in bluetooth drivers and such for bluetooth keyboard,gps,mouse, ect...via sd card .exe command or whatever means I could.Right now it is very limited as to what devices it will discover.If anyone here would know anything about how to go about this or point me in the right direction,I would shurely appreciate it.I know absolutely nothing about linux based systems. Thanks G (HowTos)