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Just bought and installed helix 9 g2n di chirp and put 2 lake master chips in the 2 slots. Question is if u r able to read both chips simultaneously or is it 1 chip at a time. I seem to be able to read from both sd slots if I remove a card but when both are inserted the unit only reads the first lake master chip. Tried playing with map source to change between the 2 but only options are auto and preloaded maps contour version. Any input welcomed. I haven't contacted hummingbird but will do...Hummingbird helix 9
Hummingbird helix 9
