Working BIOS dump reported as fully tested for board EA53, number 14222-1, with part number 448.03707.0011, fitted with an 8MB flash. The 14222-1 board code and 448-series part number follow Wistron conventions, the ODM behind many Acer notebooks. Use the image to rewrite the SPI chip with a programmer when the system no longer posts. Back up the existing chip contents before writing and confirm both the board number and flash capacity match the PCB in front of you.</div>
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 | 24 Aug 2024 | Open file on RM Schematics |
| @generalbios | 5 Nov 2024 | 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 →