12253-3 – Acer Aspire EG50
12253-3 is the Wistron main board used in the Acer Aspire EG50, Acer 522, Acer Aspire E1 and Acer Aspire E1-522. The catalog lists 3 files for it: 2 BIOS files and 1 schematic.
First posted in July 2021 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 2
Schematics 1
Board facts
| Board number | 12253-3 |
|---|---|
| Designed by | Wistron |
| Platform group | 12XXX |
| Also known as | 48.4ZK15.03M |
| First seen | 2021-07-10 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 12253-3
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.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Is there a boardview for 12253-3?
No boardview has been indexed for 12253-3 yet; the schematic is available on this page.
Which laptops use the 12253-3 board?
Files in the catalog link 12253-3 to the Acer Aspire EG50, Acer 522, Acer Aspire E1, Acer Aspire E1-522 and Acer Aspire EG50-KB.
Who designed the 12253-3 board?
12253-3 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.