GNET AD1504+ modem firmware, version 6.0 according to the name, packed into a 1.61 MB RAR archive. It is intended for reloading the device software when the unit is bricked, behaves erratically or needs to be returned to a known firmware level. Depending on what the archive holds, the image may be applied through the web interface, a vendor utility or written directly to the flash chip with a programmer. Always back up the original chip contents first and make sure the hardware variant really is the AD1504+ model.
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 →