I'm sorry about the issue. What are the models of your Garmin devices?
Do you have windows xp, vista, or 7, or 8, or mac computer?
On your windows or mac computer, can you please download / install the Garmin Express at the website below:
, then connect the Garmin device to the computer, then use the Garmin Express program to update.
Please reply at the box below to continue troubleshooting. Thank you.