Hi
You have again 2 options
either, assuming you have a 64 bit windows OS to install on
or
ftp://ftp.hp.com/pub/softpaq/sp78001-78500/sp78457.exe
and download HP Thin Update
the http site gives you version 2.2.9, the FTP site gives you 2.3.5
If you install 2.2.9, then when running it, you will be asked whether you wish to upgrade to 2.3.5
Within that tool you have the option to download and/or create a bootable USB Imagig drive