For the 3D, you need to search the TE website. Beware that this is a 3 year old thread. DDR2 memory is getting obsolete.
I will dont have DDR2 memory, but Raspberry Pi Compute Module.
I’m sorry, but I don’t know what to download above in this thread and where to upload it in Kicad on my computer. It will be uploaded to symbols or footprints??
For downloaded symbols, footprints and models, always create libraries in your own directory space. Make these project rather than global.