I'm actually having a lot of problems with the GPS a the moment. Freeze ups, battery charge problems, etc. I've written to contour
here. If this doesn't get solved soon, I'm close to dumping it.
Most of this camera's lock-up and general recording glitch problems (not all) seem to be card-derived. It just seems to be fussy about what cards it works with, particularly 'no name' brands at 16 and 32gb. To make things worse, all cards must be formatted in the camera first, not by Windows or as supplied, and the method for doing this is not in the supplied manual.
Incompatible or Windows-formatted cards can cause it to either lock up with all lights on, have the record light stay on when off or produce truncated or unreadable files.
To be fair to Contour, it's clear that
Ebay-derived cards are behind some of the Contour forum complaints - not only cards reporting fake sizes but ones with real sizes but fake big brand names and speeds.
If you're getting problems, first try the 2gb card supplied by Contour with the camera, and re-format it in the unit. If the lock-ups continue, then it is definitely something else responsible.
Not all lock-ups are due to the card used - there do seem to be hardware differences that may account for end users experience not being those of the firmware developers, and some firmware revisions introduce glitches that weren't there before. The most reliable firmware is 1.09 but this has a long gps lock time, no bluetooth functionality and, compared to version 1.15, poor image quality.
To give an idea of what is possible, I've continuously recorded 75 mile and 100 mile rides on one 32gb card using a home-made cable and external battery pack with no problems at all.
John