Concordance Support


  1. I get an error about a bad checksum, and then the software crashes with a floating point execption!
  2. I can't seem to get past the connectivity test.
  3. The site says I need a firmware upgrade.
  4. Is your software really cross-platform?
  5. Is this software affiliated with Logitech in any way?
  6. Since releasing this software, has Logitech provided you with any specs or information? Do you still need info?
  7. What can we do to help?
  8. What models are supported?
  9. Concordance is telling me it doesn't know what to do with a file.
  10. Do you plan to support building custom configs without the website?
  11. Do you plan to support the Z-Wave remotes (899, 9xx, 1xxx, XBox, etc.)?
  1. Q. I get an error about a bad checksum, and then the software crashes with a floating point execption!

    A. The most likely cause of this is that you're trying to specify one type of file while using another. Note that the first file the website will prompt you to download is a Connectivity Test, *not* an update. Thus you must either pass in '-t', or use automatic mode and let the software determine what to do automatically by specifying a file, but no other options. Once the connectivity test is passed, then the site will prompt you to download the actual update, which can be used with the '-C' option or by letting the software determine the type automatically.

  2. Q. I can't seem to get past the connectivity test.

    A. Be sure to leave your browser open. The concordance software will communicate with the website and let the webpage know when to proceed to the next step.

  3. Q. The site says I need a firmware upgrade.

    A. We support firmware upgrades on some models (see the Supported Models page). We are always working to support more models though. If your model is supported, just use Concordance to do the firmware upgrade. If yours isn't supported in the latest version you can try asking the status of the latest CVS code on our devel mailing list, or you can use the official Logitech software. Once your firmware is up-to-date, everything should function normally.

  4. Q. Is your software really cross-platform?

    A. Our software is written to be cross-platform. Version 0.20 builds on Linux and Windows and Mac OS X.

  5. Q. Is this software affiliated with Logitech in any way?

    A. No, this software is not affiliated with Logitech in any way. They do not endorse it, nor do they have anything to do with it. In fact, using this software may even invalidate your warranty.

  6. Q. Since releasing this software, has Logitech provided you with any specs or information? Do you still need info?

    A. Logitech has not provided us with any specs or information of any sort. Such information would hugely benefit getting the 89x and 100x models working as well as getting firmware updates working.

  7. Q. What can we do to help?

    A. (1) Push Logitech to release the specifications on how to communicate with their Harmony remotes. You can do this through their support forums, technical support tickets, or via email. (2) Test releases and let us know the results. (3) If you have development experience, please feel free to submit patches. (4) Donate models of the remote to us so we can test (preferably models we don't have and that aren't already working).

  8. Q. What models are supported?

    A. Please see our Supported Models page.

  9. Q. Concordance is telling me it doesn't know what to do with a file.

    A. Make sure you're using the latest version of our software. If it still can't figure it out, please report it as a bug on our SourceForge tracker.

  10. Q. Do you plan to support building custom configs without the website?

    A. This project aims to provide a cross-platform library (libconcord) that provides an abstracted and easy way to talk to Harmony remotes and clients (concordance) for that library to allow you to use your purchase from any modern operating system.

    This project has no plans to replace Logitech's website. Anyone wishing to do that is welcome to use our library for the remote communication (provided they confirm to the terms of our license).

    (Note that the library-client split is done in CVS and will be available in all post-0.13 releases.)

  11. Q. Do you plan to support the Z-Wave remotes (899, 9xx, 1xxx, XBox, etc.)?

    We'd like to support all remotes but have had less luck reverse-engineering the transfer protocols for the Z-Wave remotes than for the pre-Z-Wave remotes. We're working on it. If you have the expertise to help reverse engineer, we'd be happy to hear from you on the devel list.


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