I was pulling a BIOS from the support website and found a set of Linux utilities
Go to driver download
http://www8.hp.com/us/en/drivers.html
Search for
HP Compaq Pro 6300 Microtower PC
Select
Windows 7 Pro
Look in the BIOS section for Business Desktops BIOS Utilities
The following text was extracted after downloading and extracting SoftPaq 58029
SoftPaq Number: SP58029
Business Desktops BIOS Utilities (International)
5.03 Rev. B, 13 Feb 2014
The HP Utilities for Linux folder contains versions of the Replicated
Setup and DOS Flash utilities that are compatible with the Linux
Operating System. See README.txt after installing.
There is a Linux directory with the following contents
hp-flash-1.00-1_i686.tar.gz
hp-flash-1.00-1_x86_64.tar.gz
hp-repsetup-1.00-1_i686.tar.gz
hp-repsetup-1.00-1_x86_64.tar.gz
hpuefi-mod-1.0.3.tar.gz
README.txt
Note that I have not attempted to compile or run these linux utilities on a system.
Richard
I work for HP but am not a company spokesperson. Participation in the community forums is voluntary.