I think I have successfully download the ZEKO files now just need to figure out how to operate and accomplish the year change. Unfortunately I did not save the previous programming from the LCM4 I installed but I do have another LCM4 that has is original coding and could use that if necessary but not clear what I would need it for. When updating the LCM4 I did compare and make several updates so that the new LCM4 reflected same values as the originally installed LCM3 had but there were many (more) fields that were not the same or additional so did not alter those. When I look at the VO it already has 0521 as it did come from factory with rain sensing wipers (AIC).