Save color pattern in RAM to nonvolatile storage.
@note For mk2 devices only.
@note this doesn't actually return a proper return value, as the
time it takes to write to flash actually exceeds USB timeout
@param dev blink1 device to command
@return -1 on error, 0 on success
Save color pattern in RAM to nonvolatile storage. @note For mk2 devices only. @note this doesn't actually return a proper return value, as the time it takes to write to flash actually exceeds USB timeout @param dev blink1 device to command @return -1 on error, 0 on success