BIOS archive for the Acer Aspire E1-522, referencing the EG50-KB mainboard with board number 12253-3M and PCB part 48.47K14.03M. The 12253 numbering and the 48.xxxxx.xxx part code follow the Wistron ODM pattern. The 1.95 MB RAR should contain an SPI flash image for writing with a hardware programmer when the machine fails to post. Match the board code and revision on the PCB, read and save the existing chip, and check the image size against 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 @biosarchive. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 3 Dec 2017 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | Open file on RM Schematics |
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 →