Been reading for hours and trying to catch up. Hate asking questions which have been answered. I have 1.5.1 store and installed 1.2.5.7d, which I guess isn't even this product. I also have no luck with sql statement but was able to load basics, just don't have the config menu items yet. Basic question, should I get on 1.2.5.7 some other support link, or should I download 4.0 on Gitwhatever? Can someone send advice, and the proper link if I should go with 4.0?

I have downloaded the empty database file, and could not download my products yet. Should I go, 4.0?