Firmware dump for the D-Link DSL-2740U ADSL router, read from a 25Q32 serial flash and marked as OK, meaning it was reported working. The 25Q32 is a 32 Mbit (4 MB) SPI chip, so the binary should match that size exactly. Packed into a 1.79 MB RAR. Such dumps help restore a bricked router that no longer boots or responds to web recovery, by programming the flash with a CH341A or similar. Read the original chip first and confirm the hardware revision of the router matches.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →