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Question about Garmin Nuvi 660 GPS Receiver

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Bluetooth connetion with Verizon Treo 700P

The unit disconnects my phone. Sometimes the phone will reboot and operate normally. Most of the time it will continue to disconnect or cause my phone to freeze up. Downloading latest Garmin Bluetooth and Verizon Bluetooth software does not help. Other people I know have this problem but nobody talks about a solution.

Posted by FrankieD on

  • FrankieD Aug 24, 2007

    Thanks. Unfortunately, this may be an impossible situation. I did download the latest Verizon-Palm software. No help. The Treo combines the handsfree and headset devices so I can't separate them. I have deleted and reinstalled the Nuvi many times as a nearby, trusted device but the problem persists, disonnecting and freezing the phone. The funny thing is that it occasionally works and the old Garmin software works better than the upgraded software, often only disconnecting and rebooting the phone once. Any other thoughts would be greatly appreciated.



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Looks like your saying you've updated your n?vi 660 to software(firmware) version 2.0, if so you're moving in the right direction. Unfortunately the n?vi 660 does support the Treo 700P but only seems to support the 'Hands-free' BlueTooth profile and this is often problematical as is the 'headset' profile with some device combinations, that's precisely why many phones and devices now support both profiles. Check the pairing information to see if you're using 'headset' or 'Hands-free', whatever you're using delete the pairing on both devices and see if they will let you pair in the other profile. Your Treo 700P is made by PalmOne ( so you may want to check for software updates from them. This kind of problem is down to the lack of a solid standard for BlueTooth communications and you will often find that settings that work for one combination of devices are unstable with another. Post back if this doesn't help or if you need us to clarify anything.

Posted on Aug 23, 2007

  • 1 more comment 
  • Anonymous Aug 24, 2007

    After a full day researching this problem I can safely say it is a known issue neither Palm nor Garmin (or anyone in the Palm community for that matter) has resolved yet.
    The problem stems from the use of the wrong BlueTooth profile and as you pointed out Palm BlueTooth manager has no option to change profiles. BlueTooth data communication/PIM sync between these 2 devises is known to work OK but that uses a separate profile altogether.
    At this point there is no resolution to this issue, if anyone reading this is a developer/programer and has a copy of the Palm BlueTooth SDK can you please write a profile manager app, I think you'll find there's a demand for it.

  • Anonymous Aug 24, 2007

    One advantage to using palm is that there are lots of programers out there who write Palm applications for fun and when people request them. You stated in your first post that you know other people with the same issue so get together and post requests for help with this issue as possible, the more this issue gets seen the more chance you have of someone writing an app to resolve the problem and of embracing Palm or Garmin or both in to providing a resolution.
    In any contact with Garmin be sure to point out that there web-site claims the Nuvi 660 supports the Treo 700p and this could be considered to be false advertising.
    In communication with Palm explain that although there BlueTooth stack supports both headset and handsfree you have no option to change between the 2.
    On the forums ask if anyone can write/has written any applications to resolve this issue.
    I'm very sorry that there is no way to help you further at this point but if anything changes or a solution appears I will post it here.

  • Anonymous Aug 24, 2007

    The only thing I can suggest at this point is:
    1: Post requests to Garmin support
    2: Post requests to Palm Verizon support
    3: post requests to as many Palm forms such as and GPS forums such as as possible.



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