this system:

now ive installed the entire system only it needs to be updated how will i do this? Its a tom tom navi... see next picture
also i dont have a gps signal... i mounted the antenna into its place whent to drive with the car but no signal i even put the antenna outside the car... wich antenna do i have?


and if its this one what do i hqve to do with the next two pictures


and this is the screen where it says waiting for a usefull gps signal

thx for all the help i really dont know how to begin