OK, I down-loaded the HP Sentinel version and built my Fav List. Tried to write to the scanner and could not. When the dialogue box opened, the OK button was dimmed out and nothing would happen. Thought that perhaps the microSD card was defective (although the old database is there and will load the scanner). Bought a new microSD card today and tried to write to it, but got same results. Perhaps I need to format the card! Could find nothing in Sentinel to accomplish that. By the way, tried another USB cable that I have used successfully programming other Uniden scanners. Also tried the "clear user data" function with the same results ( OK button in dialogue box dimmed) and nothing happening. Only thing I can figure is that I need to format the new card ! Any ideas ?