I've got one of the first generation Helix mega image. Today while on the water it said I had no transducer installed. It then went into simulation mode. I tried cutting it off and restarting it several times with same results. After stopping to take a lunch break I decided to give it one more try. This time it came up working correctly and worked fine the rest of the day. Anyone else have this issue before? My gut feeling is Humminbird will be seeing this unit in the near future probably.