I have the sonar model with no GPS. You need to buy the AS PC3 Accessory kit to update the firmware on this model. Had some stuff happen yesterday on Helix that makes me want to make sure I have the latest firmware before calling Humminbird.
The cable is $80 at Cabelas. I should have spent that money on a GPS model that would allow you do this with a SD card. Why would they build that model that way.
Does anyone have that cable, that I can borrow or rent? Do places like pro-am or Fishing Hole have these to use?
I'm a tech guy and understand how important firmware updates can be.