4540s O BIOS
File details
| Type | BIOS |
|---|---|
| Format | BIN |
| Size | 8 MB |
| BIOS chip size | 8 MB |
| Added | October 12, 2025 |
| Updated | |
| Original file name | 4540s O.bin |
Where to get the file
Opens the matching file on RM Schematics, or its source details if it is not catalogued there yet.
Alternative links
- BIOS BIN FILES Posted: 10/12/25 ● live
Description
A BIOS dump in BIN format, stored under the original file name "4540s O.bin" and sized for an 8 MB flash chip. The facts do not name a brand, model or board number, so check the file's origin and the chip markings before using it. Technicians use a BIOS dump like this to reprogram the SPI flash with a programmer after corrupted firmware or a failed update. Back up the original chip contents first, and make sure the board you are working on matches the dump before writing anything to the chip.
Description generated from the catalog data. ·
Questions about this file
How do I flash this BIOS dump?
Write it to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and keep the original contents first, and check that the chip size matches the dump.
Will this BIOS work on my board?
Only if the board number and revision match: 4540s O. Dumps from a different board or revision can leave the board dead.
What does “clean ME” mean?
The Intel ME region in the dump has been reset, so it can be used on another board of the same model. Keep your original dump and transfer serial numbers if needed.