Quote:Yes, we make some prototypes pre-production of every product for test purposes. These are given to employees and select external testers. There are none ever shipped to retail stores in retail packaging.
With Proteus Core specifically, some older versions of the pre-mass-production bootloader are not compatible with the LGS version of the firmware updater. This only affects people who received a Proteus Core prototype from Logitech before March 2014. It does not affect any retail product. Something different is happening in this case.