Maybe a caution to er7ic7: From what some report, it appears that if you do the update, you will only be able to do P4 or P5 and not both? If that's the case, you may be better off sticking with Vue 4.12 which apparently will read P5 .pz3's already if you have P4 on your system. It would seem that those of us who really benefit from this update are those of us who have P5 only.