My pics:
https://plus.google.com/photos/108795314430817013268/albums/6070801963025282801?authkey=CJPO_YWhjcy3mwEHow I could have fixed my Garmin in 30 seconds & not DNF: Power off, Hold 'mode' & 'lap' for 5 seconds, pick you language & time zone. All tracks & maps are now restored. Not sure about the current track as mine was already ended.
'lap' = 'reset' on many garmin models.