HP EliteBook 8460p

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PLEASE READ THESE INSTRUCTIONS BEFORE INSTALLING, OR YOU MIGHT BRICK YOUR MACHINE: SAFETY PRECAUTIONS

HP EliteBook 8460p
Specifications
Manufacturer HP
Name EliteBook 8460p
Variants EliteBook 8460p
Released 2011
Chipset Intel QM67
CPU Intel Sandy Bridge (socketed)
Graphics Intel HD Graphics (supported in Libreboot) or
AMD Radeon HD 6470M (unsupported in Libreboot)
Display 14" 1366x768 or 1600x900 TFT
Memory Two slots, max 8GB/slot (16GB), DDR3/SODIMM
Architecture x86_64
EC SMSC KBC1126, proprietary (in main boot flash)
Original boot firmware HP UEFI firmware
Intel ME/AMD PSP Present. Can be disabled with me_cleaner.
Flash chip SOIC-8 8MiB (64Mbit) 
W+: Works without blobs;
N: Doesn't work;
W*: Works with blobs;
U: Untested;
P+: Partially works;
P*: Partially works with blobs
Features
Internal flashing with original boot firmware N
Display (if Intel GPU) W+
Audio W+
RAM Init W+
External output W+
Display brightness W+
Payloads supported
GRUB Works
SeaBIOS Works
SeaBIOS with GRUB Works

Introduction

Unavailable in Libreboot 20231106 or earlier. You must compile from source, or use a release newer than 20231106.

This is a beastly 14" Sandy Bridge platform from HP. NOTE: Until otherwise stated, only the Intel GPU variant is supported in Libreboot.

Build ROM image from source

The build target, when building from source, is thus:

./mk -b coreboot hp8460pintel_8mb

Installation

Insert binary files

If you’re using a release ROM, please ensure that you’ve inserted extra firmware required refer to the guide for that. (failure to adhere to this advice will result in a bricked machine)

Set MAC address

This platform uses an Intel Flash Descriptor, and defines an Intel GbE NVM region. As such, release/build ROMs will contain the same MAC address. To change the MAC address, please read nvmutil documentation.

Flash a ROM image (software)

If you’re already running Libreboot, and you don’t have flash protection turned on, internal flashing is possible.

Flash a ROM image (hardware)

REMOVE all power sources like battery, charger and so on, before doing this. This is to prevent short circuiting and power surges while flashing.

For general information, please refer to 25xx NOR flash instructions.

At this present time, disassembly instructions are unavailable from the Libreboot project, but you can search for HP’s own hardware maintenance manual or look at videos online showing disassembly.

The flash chip is visible by removing the “bottom door” panel. But the frame makes it hard to put a clip on it, so it’s recommended to follow the HP service manual to remove the bottom cover, as it’s called.

Markdown file for this page: https://libreboot.org/docs/install/hp8460p.md

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