I updated the software on my 788c, I thought I had gone back to factory defaults but I had not. When the software came up to install it had the option to abandon the upgrade, the default was yes. I went ahead and updated anyway. Is there a way to see if the unit is messed up? It does come up, I can see my map chip but the sonar reading looks a little funky. The boat is in the garage without the ability to actually put the transducer in water. I was just wondering if there is some sign or something I can look for to see if I messed up. Thanks.
