Hi i have the above headunit and all was working then i briefly disconnected the battery and on restart it is asking for password which i know and is a series of number but and this is the problem the bottom of the screen seems faulty as when i try to select the number button it highlights the line above hence can only input letters and also the go button lights up one above hence need access to the unit to enable recalibration of screen . Ihave found some information on the net and downloaded a file to do this but cannot get to work.Can anybody supply a file and instructions to enable this to work?