I’ve got some corrupt softpaq downloads using
https://ftp.hp.com/pub/caps-softpaq/cmit/HP_Driverpack_Matrix_x64.html

ftp://ftp.hp.com/pub/softpaq/sp66001-66500/

This one is working

ftp://g4u0180.houston.hp.com/ftp1/pub/softpaq/sp66001-66500/