TITLE: HP BIOS and System Firmware (T79/T98)
VERSION: 01.24.02 REV: A PASS: 0
DESCRIPTION:
This package is used to update the supported firmware on HP Business Notebook
systems with a T79/T98 family BIOS.

NOTE: To determine the ROM family and ROM date, press F10 on the computer system
during startup to run the Setup Utility, and then view File/System Information.
PURPOSE: Critical
SOFTPAQ NUMBER: sp173186
SOFTPAQ FILE NAME: sp173186.exe
SOFTPAQ MD5: 0C0DB1E5143A9028C3F49FE7ABEF01BD
SUPERSEDES: sp171886
EFFECTIVE DATE: May 20, 2026
CATEGORY: BIOS - System Firmware
SSM SUPPORTED: Yes

PRODUCT TYPE(S):
Notebooks
HARDWARE PRODUCT MODEL(S):
HP ZHAN 66 Pro A 14 G4 Notebook PC

OPERATING SYSTEM(S):
Microsoft Windows 10 All Editions (64-bit)
Microsoft Windows 11

LANGUAGE(S): Global

ENHANCEMENTS:
- Adds a new ownership state for 2023 Secure Boot certificates to track whether
certificate settings use Microsoft defaults or have been modified by the user.
If certificates are modified (added, disabled, or cleared), HP BIOS claims
ownership of the policies to prevent Secure Boot changes when the system
restarts.
- Updates the system with the latest 2023 UEFI security certificates.
- Adds support for Windows driver installation using DIRID 13.

- Includes the following firmware:
Embedded Controller (EC), version 41.35.00
Intel/AMD/NVIDIA Video BIOS, version 113-CEZANNE-021
Intel/AMD/NVIDIA GOP, version 2.24.0.17.10
Intel/Realtek PXE ROM, version 2.67
Intel/Realtek UEFI PXE ROM, version 2.052
AMD PSP Firmware, version 0.11.0.88
AMD SMU Firmware, version 64.74.0
USB Type-C Power Delivery (PD) Firmware, version 0.5.0.0
PREREQUISITES: NONE
HOW TO USE:
1. Download the file by clicking the Download or Obtain Software button and
saving the file to a folder on your hard drive (make a note of the folder where
the downloaded file is saved).

2. Double-click the downloaded file and follow the on-screen instructions.

Copyright (c) 2026 HP Development Company, L.P.