peterv6i
I see that your software level is 4.500. My unit was built Feb.16,2010 and came with 4.830.
I would try updating the software first. I'm at 5.700 now and it meets my needs. Tried 6.18 awhile, but image was not as good.
Went back to 5.700.
Make sure you read Robert's post about updating before you do anything.
December 04, 2013, 06:43:42 AM
topic PLEASE READ: Humminbird Software/Firmware Updates and older downloads
Mike