ASUS EeePC 1000H (W25X40)

BIOS .bin 512 KB Shared

ASUS Eee PC 1000H BIOS image of 512 KB, with the name noting a W25X40 flash chip, a Winbond 4 Mbit SPI part. Knowing the chip lets you select the right device in programmer software and confirm the size matches. Netbooks of this generation are often revived by writing such a dump directly when the BIOS is corrupted. Before flashing, verify the chip marking on your board reads W25X40 or a compatible 4 Mbit part and save the original contents to a separate file.

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 .bin file

A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.

CH341A + NeoProgrammer / AsProgrammerflashromRT809F / RT809HTL866II / T48UEFITool (to inspect)HxD (hex editor)

More about .bin files

Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →

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