Garmin AU support told me to use Training Centre until further notice to create and upload plans and workouts to my FR220.
I used a SPEED threshold in a workout, I chose for X minutes "walk" ( or slow walk or fast walk.. they all do the same).
When i got to that step of the workout ...Crash .....[ Garmin ^ ] logo... 10 seconds delay, beep , Garmin logo again.When it woke up it told me i had either 0 steps to go or something like 2455 steps to go.
I've lost my footpod calibration at the same time , its back to 1.00.
The .FIT files define what speed each of the monements are but the 220 can't handle it.