I am running 6.74 on my 998csi. Since I don't require any of the new features included in this update, it looks like the only benefit would be turning off the ping when sonar is off. My question is, "would installing this update in any other way improve the performance of my unit??" And also does the continuing ping when sonar is off harm transducer or head in any way?? if not, why does it matter as long as it doesn't cause interference on other sonar units.