Before we discuss the "top" file, let us clarify the terminology.
For the HP Z240, the SPI flash chip is usually a Winbond 25Q128 (16MB) or 25Q256 (32MB). The "HP Z240 BIOS BIN file top" refers to a clean, region-unlocked dump that works with external programmers like the CH341A or RT809H.
The HP Z240 comes in two distinct variants. Using the wrong BIN file will brick your machine further. You must match the BIN to your System Board ID (found on a sticker near the RAM slots).
| Model | Motherboard Name | Board ID | BIOS Chip Size | Common Chip Part | | :--- | :--- | :--- | :--- | :--- | | Z240 Tower (TWR) | 802F | 802F | 16MB (128Mbit) | Winbond 25Q128JVPQ | | Z240 SFF | 802F | 802F | 16MB (128Mbit) | Macronix MX25L12873F |
Note: Later revisions of the Z240 with Kaby Lake (7th Gen) support sometimes require a 32MB chip. Always verify your chip physically before downloading a file. hp z240 bios bin file top
The Z240 has several motherboard revisions. A BIOS bin file from a "Rev A" board may not work on a "Rev B" or "Rev C" board due to differences in component support (such as different generations of Intel Core or Xeon processors).
To obtain the HP Z240 BIOS .bin file, you typically need to download the official BIOS SoftPaq from the HP Support website and extract it manually. For the Z240, the system firmware file is often identified as N51_[Version].bin. Steps to Extract the .bin File
Download: Visit the HP Z240 Software and Drivers page and download the latest BIOS update (e.g., sp154352.exe).
Extract: Use a tool like 7-Zip or run the downloaded .exe and select the option to "Extract only" instead of installing. Before we discuss the "top" file, let us
Locate: Open the extracted folder. The .bin file is usually located within a nested directory structure (e.g., Hewlett-Packard\BIOS\New).
Common Filename: For the Z240, look for a file named something like N51_0191.bin. How to Use the .bin File
Flash via BIOS: Place the .bin file on a FAT32-formatted USB drive. Enter the BIOS Setup Utility (press F10 during startup) and use the "Flash System ROM" command under the File tab.
External Programmer: If the workstation is bricked, the .bin file can be used with a hardware programmer (like a CH341A) to flash the BIOS chip directly on the motherboard. Important Considerations For the HP Z240, the SPI flash chip
Version History: If the latest version does not work, you can find previous versions like 01.84 or 01.82 under the Revision History section of the HP support page.
Legacy vs. EFI: Flashing the latest BIOS may require Windows 10 to be installed in EFI mode to avoid boot hangs.
The most critical technical detail regarding the HP Z240 (and its siblings like the Z2 G4) is that it utilizes two BIOS chips on the motherboard. This is a common source of confusion during repairs.
Why this matters: If you are attempting to repair a bricked Z240 by dumping a .bin file onto a chip using an external programmer (like a CH341A), you must ensure you are flashing the correct file to the correct chip. Flashing the "Top" file to the "Bottom" chip, or vice versa, will result in the system failing to post.