12253-1 – Acer Aspire EG50-KB
The 12253-1 (Wistron) motherboard is found in the Acer Aspire EG50-KB, Acer Aspire 522, Acer Aspire E1 and Acer Aspire E1-522. The catalog lists 4 files for it: 2 BIOS files, 1 schematic, 1 boardview and 1 EC firmware image.
First posted in October 2022 in Cyberlan Electronics, BIOS Archive and Schematics & Boardviews Archive.
BIOS dumps 2
Schematics 1
Boardviews 1
From the uploader
Acer Aspire E1-522 EG50-KB MB 12253-1M 48.4ZK05.01M Wistron Corporation PDF
Board facts
| Board number | 12253-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 12XXX |
| Also known as | 48.4ZK05.01M |
| First seen | 2022-10-09 |
| Source channels | Cyberlan Electronics, BIOS Archive, Schematics & Boardviews Archive |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 12253-1
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.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .brd | .brd boardview (Test_Link format) | OpenBoardView, FlexBV or BoardViewer |
| .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
Which laptops use the 12253-1 board?
Files in the catalog link 12253-1 to the Acer Aspire EG50-KB, Acer Aspire 522, Acer Aspire E1, Acer Aspire E1-522 and Acer Aspire EG50.
Is there a boardview for 12253-1?
Yes, 1 boardview file in .bdv and .brd format.
Who designed the 12253-1 board?
12253-1 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.