Anybody knows if the Zumo 550 issue with firmware version 4.90 has been resolved? The Garmin myDashboard keeps on telling me there is an update from 4.80 to 4.90 plus some additional updates for Bluetooth etc. I do not know if it is now safe to risk doing the 4.90 update again. It has been a year since my original 4.90 problem with the Zumo 550. Surely by now Garmin should have taken notice and fix the problem?