The links are there and working:
Prerequisites:
Customers running a version of iLO 3 previous to v1.20 must upgrade v1.20 before upgrading to this version. iLO 3 v1.20 may be obtained from the following locations:
Linux: https://downloads.hpe.com/pub/softlib2/software1/sc-linux-fw-ilo/p1255562964/v64722/CP014002.scexe
Windows: https://downloads.hpe.com/pub/softlib2/software1/sc-windows-fw-ilo/p901462262/v64721/cp014001.exe
Win64: https://downloads.hpe.com/pub/softlib2/software1/sc-windows-fw-ilo/p1728391553/v64720/cp014000.exe