I unplugged my cpap, removed the SD card, moved the tab to "lock", placed it in a card reader, and connected it to my Linux machine (Ubuntu 14.04). I copied the card, then removed the card reader, removed the SD card, unlocked the card, placed it back in the cpap, and restored power to the cpap. Everything looked normal. However, since doing this "reading of the SD card", my cpap is no longer "phoning home" any data to ResMed. It's working just fine in every other way, as far as I can tell.
I saw the warnings about some operating systems ignoring the card lock and writing hidden system files on the SD cards when they were being read, but I (perhaps foolishly?) did not think that applied to a Linux system.
Any suggestions? What happened? I'm not very techie, btw, so please give me the entry level explanation if it involves Linux (I had help setting up my system, so the usual assumptions about Linux owners don't apply to me - I just wanted to be a rebel!)
Update: my cpap called home! So now the question is: did ResMed have a problem over the weekend, or do I have a loose connection or something in my two week old new cpap? I moved it around, trying to see if for some reason the cell signal was weak - then I returned it to the exact same place I've had it since I got it. Phew! I thought I had done something unspeakable to my SD card!
Don't be concerned at all yet. There is no guarantee that MyAir will receive your data on a rigorous time schedule. It happens when it happens but it should get sent sometime every day. If you get into the mode where it consistently does not get received then you may assume the modem is not working. My first AirCurve machine did not communicate at all and I was given a new machine.
if you can't decide then you don't have enough data.