I’ve written about my SpotX device before. It has a major firmware revision out for the Mac but you need to be cautious. You must download the latest firmware program before updating your device. In other words, download the newest installer first, then go from there.
I had problems updating which in the end required a new unit to be sent to me. But the folks at Spot did that for free by overnight mail. They may have their problems, like any other company, but they earnestly work on solutions and they do not ignore you.
Here is their message regarding this problem:
Dear SPOT X Customer,
If you are a Mac user, a manual download is required for the newest SPOT X Updater (v1.11.10) before you complete the firmware update that was released last week (v1.6.8). To download the latest Updater click here and follow the prompts.
Failure to do so will require a Factory Reset of your device at a minimum.
If you require assistance, please contact Customer Relations at 866-651-7768.
If you have already successfully updated your device, please disregard this message.