BIOS package for the Toshiba Satellite L745D-S4350, built on Insyde firmware, version 1.20. The archive is small, about 1.12 MB, so it may hold an update package or a raw image rather than a full dump. Insyde H2O firmware is used in many Toshiba consumer laptops of that era. Before writing anything to the SPI flash, open the archive to see what it contains, confirm the file length matches the chip capacity, and keep a backup of the existing contents.
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 →