12243-3 – Acer Aspire EA40-HW
The 12243-3 (Wistron) motherboard is found in the Acer Aspire EA40-HW, Acer Aspire E1-432 and Acer Aspire E1-472G. 3 files are indexed for this board: 2 BIOS files and 1 EC firmware image.
The BIOS dumps are 8 MB images. First posted in March 2021 in BIOS Archive and Laptop & Desktop BIOS Files.
BIOS dumps 2
EC / KBC firmware 1
Board facts
| Board number | 12243-3 |
|---|---|
| Designed by | Wistron |
| Platform group | 12XXX |
| Also known as | 48.4YP20.031 |
| BIOS chip size | 8 MB |
| Flash chip | MX25L6473 |
| EC / KBC chip | IT8587E |
| First seen | 2021-03-04 |
| Source channels | BIOS Archive, Laptop & Desktop BIOS Files |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 12243-3
- Acer Aspire EA40-HW
- Acer Aspire E1-432
- Acer Aspire E1-472G
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
What BIOS chip size does 12243-3 use?
The BIOS images for 12243-3 are 8 MB. Flash chips named in the files: MX25L6473.
Which laptops use the 12243-3 board?
Files in the catalog link 12243-3 to the Acer Aspire EA40-HW, Acer Aspire E1-432 and Acer Aspire E1-472G.
Who designed the 12243-3 board?
12243-3 is a Wistron board number used by Acer.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.