I am unable to upgrade my Edge Explore from 4.30 to 4.60. The device performs upgrade validation (0-100%), turns the device off and does not turn it on. When I do it manually after some time the firmware is still 4.30.
I disabled GPS and phone connection, removed the GUPDATE.GSC from the folder ..\Garmin, synced again via Garmin Connect (Windows 7) and upon powering up the device asked for upgrade. I clicked Upgrade now and it worked.
If I had to factory reset this rubbishy device in order to do the upgrade I'd have sold it.
This is very intuitive, Garmin (turning off phone connection), have you thought about fixing it?