I've followed all the directions but am failing on getting my new Montana 610 to pre-boot. Holding the power button down or even holding the left corner of the screen will not get the updated to see my GPS. I have the Garmin USB drivers installed. I have Windows 10 and I can access all files on the GPS via win explorer.
The firmware is at 240, the latest which is the same that i patched.
Need help please!