Firmware for the HP ProBook 6450b on board 6050A2326601-MB-A05, packed as RAR. The name states a 4MB BIOS, matching a 32 Mbit SPI flash. The 6050A numbering is used by Inventec, which produced many HP business notebooks. Technicians program such an image onto the flash chip to fix a no-boot condition or a corrupted BIOS. Dump the original chip first to keep serial and product data. Confirm the A05 revision on the PCB and that the image size suits the chip.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →