BIOS image for a ZX-H61C board, with B75 and version 6.0 noted in the name, meant for a 25Q32JVSIQ flash, a 32 Mbit (4MB) Winbond SPI chip. Packed as a ZIP of about 2.7 MB, it is used to reprogram the chip with a programmer such as a CH341A on a generic desktop board that fails to boot. These boards come from smaller manufacturers, so check the PCB silkscreen and chip marking carefully. Back up the original chip and make sure the extracted image matches the 4MB capacity before writing.
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 @biosdumpcomputer. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →