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I would like to know if I have understood correctly how the gas change works. During the ascent, at the programmed altitude, the computer signals to change gas. At this point, if I DO NOT confirm change gas, the computer does NOT recalculate the decompression plan and the TTS remains the SAME as if ...

I've downloaded the last version of subsurface 4.5.2. It does not work ,during download divelog,near the green process status bar (see attachment)appear this message :error parsing the header. Happen that the bluetooth connection of OSTC2 fall down and noone divelog is downloaded...tryed different t...

last week I've buyed ostc2...I meet problems with sensitivity of left button,it's very hard to push with 40%...once set to 20% it's gonna better,but not ever.sometimes it not react well,so you have to push it strongly.
Firmware vertion 1.81
No problems meet with right button,this work properly.