This guide is for Microsoft Windows 8.1: https://support.hp.com/us-en/drivers/selfservice/hp-probook-6460b-notebook-pc/5045594
But I do not have Microsoft Windows 8.1.
The existing BIOS has a menu for updating it (ESCF10 > Update System BIOS). Here it says:
Place the System BIOS and Signature file on a FAT32 partition either on the system hard drive or on a removable USB Key under the "Hewlett-Packard\BIOS\New" folder.
Add or verify the HP Bios update utility (HpBiosUpdate.efi) and signature file are located on the same FAT32 partition under the folder path: "Hewlett-Packard\BIOSUpdate".
The system BIOS will be update on the next restart.
It also tells me that the current BIOS revision is 68SCE Ver. F.61.
.
On a Microsoft Windows 10 machine I have been able to unpack https://ftp.hp.com/pub/softpaq/sp85501-86000/sp85528.exe
It contains 68SCF.CAB which contains efibios.sig, Rom.bin, Rom.sig, ver.sig, ver.txt.
By renaming the 68SCF.CAB to ROM.CAB the program HPQFlash.exe can run. It writes this to the USB-disk:
./HEWLETT-PACKARD
./HEWLETT-PACKARD/BIOS
./HEWLETT-PACKARD/BIOS/Current
./HEWLETT-PACKARD/BIOS/Current/N24ET53W.BIN
./HEWLETT-PACKARD/BIOS/Current/N24ET53W.SIG
./HEWLETT-PACKARD/BIOS/New
./HEWLETT-PACKARD/BIOS/New/N24ET53W.BIN
./HEWLETT-PACKARD/BIOS/New/N24ET53W.SIG
./HEWLETT-PACKARD/BiosUpdate
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate.s12
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate.s09
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate.sig
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate32.s12
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate32.sig
./HEWLETT-PACKARD/BiosUpdate/CryptRSA.efi
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate32.efi
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate32.s09
./HEWLETT-PACKARD/BiosUpdate/CryptRSA32.efi
./HEWLETT-PACKARD/BiosUpdate/HpBiosUpdate.efi
./System Volume Information
./System Volume Information/AadRecoveryPasswordDelete
./System Volume Information/IndexerVolumeGuid
./System Volume Information/WPSettings.dat
./System Volume Information/ClientRecoveryPasswordRotation
When using that the update fails. It writes a log (HpBiosUpdate.log):
05/02/20 08:02:41 EFI HP BIOS Update 2.7.1.0 Started
05/02/20 08:02:41 Failed init of SMBIOS data
Is there a way to install the upgrade of the BIOS (F.67 Rev.A) using GNU/Linux (possibly including FreeDOS or Wine)?