Just to share my experience:
My unit is 3597 LMT FW 4.00 + SD Card SanDisc 8 GB HC
Problem - very often when I'm connecting the unit the PC /Win7 Pro/ can not see the unit.
I have installed Garmin USB drivers etc.
Also a lot of Garmin programs are installed on PC.
Unit is on MTP.
What I have done to solve the problem:
1. Restarted PC several times
2. Restarted 3597 unit several times
3. Make restarts from above together
4. Reinstall USB drivers
All above - no luck at all.
Unit was still invisible to PC.
What I did and helped me is that I just removed SD card from the unit and have a success.
Unit immediately connected to PC and after that I just put SD in the unit.
I'm writing this if someone has such a problem to try and this option.
Apparently I have some problem with SD card or there is something wrong with software or GarminDevice.xml on SD card - can not determine for the moment. I'm considering that I might have a problem because on all the units I have had before the Eject order was:
1. Eject SD
2. Eject the unit
Unit shut down after p. 2 Eject
Here on 3597 the Eject order is opposite - First Eject unit and then SD Card
The above works for me - may be it will work for you to.
@Moderators:
If the problem have been discussed already /I'm not good at all with the forum search/, or it is not in proper section - feel free to move it/delete it.
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