It looks like you need to go in sequence i.e. sp4, sp5, sp6, sp7. That is fine I do have sp7 installing successfully now. Now to see if I can get a dymo 30321 label to print. I am confident it will.
BTW: this link works for all downloads:
https://websmp130.sap-ag.de/sap%28bD1lbiZjPTAwMQ==%29/bc/bsp/spn/patch_download/main_public.htm
Thank you!!