supported models:
HP ProLiant BL460c Gen8 Server Blade
HP ProLiant DL360p Gen8 Server
HP ProLiant DL380p Gen8 Server
HP ProLiant ML350p Gen8 Server
HP ProLiant WS460c Gen8 Graphics Server Blade
HP ProLiant BL420c Gen8 Server Blade
HP ProLiant DL360e Gen8 Server
HP ProLiant DL380e Gen8 Server
HP ProLiant ML350e Gen8 v2 Server
HP ProLiant SL4540 Gen8 Server
HP ProLiant BL660c Gen8 Server Blade
HP ProLiant DL560 Gen8 Server

what you need to do :
Upgrade OPTION 1: Burn the ISO file to optical media (CD or DVD) and boot the optical media.

Upgrade OPTION 2: Mount the ISO file as an iLO virtual drive and boot the virtual drive.

Upgrade OPTION 3: Create a bootable USB key image on Windows or Linux and boot from it. This method will ERASE ALL CONTENTS of the USB key.