‘I am unable to perform the Garmin GPS Update’. These are one of the most frequently asked questions over the web asked by the millions of Garmin device users. For fixing the issue, the user is required to do some basic check-ups in the device as well as the system. Check whether the Garmin express software is installed correctly in the system or not, if not then do re-install it correctly. After this, check for the security firewall. Disable it for the time being and then try to update the device again. Close all the other running applications in the background. Contact with the Garmin expert for quick help regarding the subject matter through the Garmin support team.