BIOS image for the ASUS X550JX laptop, mainboard revision 2.0, for the Core i5 version according to the name, in a 3.24 MB 7z archive. ASUS often builds one model on several revisions and CPU configurations, so match both the revision printed on the board and the processor. Flash it with a SPI programmer after reading and saving the original chip, which holds the serial number and other board data. Confirm the image size equals the flash chip capacity before writing.
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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →