BIOS together with EC firmware for the Acer E1-522 laptop, motherboard EG50-KB with Wistron number 12253-1M, packed as a 2.02 MB ZIP. Having both the system BIOS and the embedded controller code helps when a board will not power on, charge or post because either chip holds corrupted data. Write each image to its own chip with a suitable programmer after saving the original contents. Check that file sizes match the respective flash parts and that the PCB number is 12253-1M.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →