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Since the device isnt visible on garmin express, we may need to master reset the device first.
So lets try this procedure and let me know if it seems to reset.
Hold POWER BUTTON on for 15 seconds. The device should hopefully start to turn off.b. Press and hold UP ARROW BUTTON and DOWN ARROW BUTTONc. Press but don’t hold the POWER BUTTON for a second or so second – device should turn ond. Wait for 1st beep then release UP ARROW BUTTONe. Wait for 2nd beep then release DOWN ARROW BUTTON
If not, we may need to try the garmin recommended procedure as follows.
Hopefully one of these will allow you to reset the device. And then, it should be visible in garmin express and able to be updated.
If its still not visible, let me know the type of computer you are working with ( PC or Mac ) and we will continue from there.
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Just holding the power button down for a while is not what I suggested.
Theres a specific reset procedure that involves more then just holding down the power button.
Maybe if you re read my last message, you will see there was more to it then hold down the power button.
And regardless of whether you have google or not, I work with these devices day in and day out. I dont feel inclined to hand write and publish my own webpages for procedures that are already shown elsewhere. At the end of the day, its about understanding the processes that need to be carried out, and what processes to carry out next should you get error A or result B.