Vehicles before August 2017 had HW2 which also came with different cameras. Yes, all vehicles right now need HW3 to get FSD Beta, so the question is basically asking if it works with the older cameras that lack the blue (?) channel. See Honolulu SC just completed my MCU2 UpgradeI don't follow your question about HW2 or 2.5 since he would have to have upgraded to the HW3/FSD computer to get into the FSDBeta?