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After looking the 2 over, it seems like the only change is the compass? Can the petrel 1 be upgraded to the 2?
steps to see if yours will support compass are here:
https://www.shearwater.com/frequently-asked-questions/
i found my new my new petrel is a 2. Cool.
Still wonder if there is an upgrade path.
Does it really matter for which market their computers are intended? As long as they keep their computers simple & reliable they will always be able to sell more computers than they can manufacture. Those two things are exactly the reason I and many others find the Petrel attractive. Those things are missing in my opnion in rec computers.For Shearwater to 'keep it simple & reliable so as to be excellent' for their core tec. diver market made some sense.