Firmware for a TP-Link TD-8901N ADSL modem router, hardware version 2.0, supplied as a 1.35 MB zip archive. Router firmware is hardware-revision specific, so check the version label under the device before flashing. The file can be loaded through the web interface for an update or, on a bricked unit, written via serial recovery or directly to the flash chip with a programmer. Make a backup of the existing flash first if possible, as it contains settings and calibration data unique to the unit.
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 .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 →