HP ProBook 4540s firmware listed for an i7 configuration, with the name indicating the 68IRR ROM family at version F.42. The 5.00 MB size is unusual.

A duplicate 4540s BIOS dump with a (2) suffix, 8 MB, in raw .bin format. The model code fits the HP ProBook range, but the name gives no brand, board number or revision.

Binary BIOS dump for a 4540s, a model code that matches the HP ProBook 4540s, though the brand is not written in the name.

An 8 MB raw BIOS image whose name gives only the number 4540s, most likely pointing to an HP ProBook 4540s, though nothing else about board revision or firmware version…

BIOS firmware archive whose name points to the HP ProBook 4540s, though no brand is confirmed in the listing and no board number, revision or chip details are given.

BIOS dump for the HP ProBook 4540s, platform Roadrunner 1.1, Wistron board 12260-1 marked 48.4SI08.011, UMA (integrated graphics) version, for a 25Q64 flash chip.

An 8 MB raw BIOS binary labelled for the HP 4540, most likely a ProBook 4540s, with the name marking it as checked and working.

Firmware dump for an HP 4540, which by naming convention is a ProBook 4540s, stored as an 8.00 MB binary.

BIOS firmware for the HP ProBook 4540s, marked twice as OK in the name, which suggests the uploader tested the dump and found it working.