i need to get a software upgrade in order to use navionics 08. i have try humminbird and they say to send it in because i have a field service s/n. would much rather do this myself and save some dough, so can i use the software for the side imagers to upgrade even know this isnt a s.i but uses a quadra ducer for sonar off to the sides of the boat? thanks in advance to whomever replies.