Binary of 256 KB named z530n, with no brand or board number in the name. The small size points to an EC or secondary flash image rather than the main BIOS, and a 4 MB file with the same name exists as a likely partner. Find the 2 Mbit chip on the board that matches this capacity before writing anything. Read and keep the current contents first, since an image written to the wrong chip will not fit or will leave the machine dead.
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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →