Just tried the reformat of the SD card ONLY -- and I still get the same error telling me that I cannot set a date in the past.
However, using the clinician's menu, I selected "Erase Data" and the date reset worked -- and then the card was automatically reformatted.
There is no cumulative or session data remaining on the card but curiously the two empty folders in the DataLog folder are labeled 20180317 and 20180318 (which was the erroneous date).
There is a newly-written SETTINGS file -- containing all of the settings dated 3/17/2018. All of the settings were verified as correct using ResScan.
Also curious is all of the files in the top-level directory are dated 3/18/2018 -- even though the card was reformatted twice (once by my pc and once by the device) on 3/17/2018 which indicates an issue with ResMed's software.
Will report the results of tonight's sleep (using ResScan, Sleepyhead, and MyAir) I am curious to find if the current 3/17 entry on AirView is overwritten by the new 3/17 data.
** UPDATE -- CONTINUING THE SAGA
(1) I found the cause of the data error -- (blind and stupid, what a combination) -- I accidentally set the date forward one day on the last "spring ahead" Daylight Savings Time change and since the device allows forward dates without error, the dirty deed was done without my noticing.
(2) After using the clinician's menu to erase all data and reformatting the SD card, I re-set the date without issue or warning ...
(a) The device showed the correct date/time/and overnight sleep data.
(b) ResScan noted the duplicative data for the same date and asked me if I wanted to overwrite the old data. I said "yes" and all was well.
© Sleepyhead has a few bugs: one, the system did not note duplicate date's data and added the new data to the old data without asking. Thinking I would re-build the data, I tried that and no joy -- the data doubled itself. Then I decided to delete the current day's data and reimport.
-- Data
----Advanced
----Purge Current Selected Day
After the "Nothing Here" message displays ...
---File
----Import Data
And all was well.
(d) MyAir was a major issue.
One, I got an error message on sign-in "Your account does not have a machine serial number associated with it. Without a serial number and device number, myAir can't retrieve your sleep data."
Two, I received an e-mail from "MyAir" that said, "The serial number of the machine you had on file with myAir previously had a relationship with a provider. That provider has removed this machine from your account so it has also been removed from your myAir account. To continue using myAir, please sign in at
https://myair.resmed.com/. You will be prompted to provide the new serial and device number of the machine you are currently using. The serial and device numbers can be found on the back of your machine."
Three, I re-entered the serial number and device number from the back of the machine and all of my sleep data appeared -- including the erroneous day's data. I tied a hard power reset (pulled the plug) to see if the device would resend the data. No joy!! It may be an issue of timing, but I am filing a bug report anyway.
Best Practices: (1) Do not screw up the date and time.
(2) If you do erase all the data, be prepared for ALL the consequences.
(3) Consider becoming a Zen master rather than a perfectionist.
"The object in life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane." -- Marcus Aurelius
