ECS BAT-ATX-12J1800 firmware archive, marked tested and working, 3.94 MB in RAR format. This ECS board is an ATX format design with an integrated Intel Celeron J1800 Bay Trail SoC. The package should contain a BIOS image for reprogramming the SPI flash with an external programmer when the board is dead or fails after an update. Do not mix it up with the smaller BAT-12J1800 variant. Save the existing chip contents first and confirm the image size equals the flash capacity.
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 @hrtechno. 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.