Gleaned from previous discussions on this forum and Yahoo/Ifinder group:
- Older models (12 channel, b&w screens) can only handle 1GB cards
- Newer models (>12 channels, color screens) can handle 2GB cards
Can you get it to work with a smaller card?
I contacted Lowrance (re H2o C) and was told maps had to be 1/2 GB or less but you can put more than 1 map on the same card. I tried this with 1GB card made 2 maps each less than 1/2 GB this loaded and functioned with no problem.
Jack