Flash memory addressing can be oriented as “top” or “bottom.” In SPI flash chips common on HP Z240 boards, the “top” refers to the highest memory addresses. For a 16 MB chip (address range 0x000000 to 0xFFFFFF ), the top region includes the last few megabytes. This area often stores critical components:
: 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
| 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 |
While BIOS updates are necessary for security and performance, there's always a risk of bricking the system if the update process fails.