https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-a00026427en_us

root@gen8:~# wget --content-disposition https://is.gd/fGtAQi
--2018-07-08 12:53:40--  https://is.gd/fGtAQi
Resolving is.gd (is.gd)... 104.31.14.172, 104.31.15.172, 2400:cb00:2048:1::681f:fac, ...
Connecting to is.gd (is.gd)|104.31.14.172|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://downloads.hpe.com/pub/softlib2/software1/sc-linux-fw-ilo/p192122427/v142463/CP033806.scexe [following]
--2018-07-08 12:53:41--  https://downloads.hpe.com/pub/softlib2/software1/sc-linux-fw-ilo/p192122427/v142463/CP033806.scexe
Resolving downloads.hpe.com (downloads.hpe.com)... 15.233.160.59
Connecting to downloads.hpe.com (downloads.hpe.com)|15.233.160.59|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 13664682 (13M) [application/x-force-download]
Saving to: ‘CP033806.scexe’

CP033806.scexe                        100%[=========================================================================>]  13.03M  2.86MB/s    in 6.9s

2018-07-08 12:53:49 (1.89 MB/s) - ‘CP033806.scexe’ saved [13664682/13664682]

root@gen8:~# ./CP033806.scexe
/root

FLASH_iLO4 v1.17 for Linux (Sep 30 2015)
(C) Copyright 2002, 2015 Hewlett-Packard Enterprise Development Company, L.P.
Firmware image: ilo4_260.bin
Current iLO 4 firmware version  2.40; Serial number ILOCZ163700YP

Component XML file: CP033806.xml
CP033806.xml reports firmware version 2.60
This operation will update the firmware on the
iLO 4 in this server with version 2.60.
Continue (y/N)?y
Current firmware is  2.40 (Dec 02 2015 00:00:00)
Firmware image is 0x1001b1c(16784156) bytes
Committing to flash part...
******** DO NOT INTERRUPT! ********
Flashing is underway... 100 percent programmed. \
Succeeded.
***** iLO 4 reboot in progress (may take more than 60 seconds.)
***** Please ignore console messages, if any.
iLO 4 reboot completed.