A BIOS / firmware dump (board DAOSW9MB6E0). Shared as “BIOS_Itautec_7430_7435_bkp_100%_daosw9mb6e0_rev_e_13211_eletronicabr.rar” — a .rar file, 1.64 MB.
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 @abgm_manutencao_bios. 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.
7-ZipWinRARThe Unarchiver (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →