01-02-2016 16:47
01-02-2016 16:47
01-03-2016 01:08
01-03-2016 01:08
It seems 86 is the latest version:
http://help.fitbit.com/articles/en_US/Help_article/What-has-changed-in-the-latest-tracker-update/
Fitbits automatically sync every 15 - 20 minutes to the wireless when its in range and you are using a computer to sync.
It's a little different with the app. It will sync every time you open the app but will not keep on syncing unless you enable "all day sync"
http://help.fitbit.com/articles/en_US/Help_article/How-do-Fitbit-trackers-sync-their-data/