203004-1 – Lenovo ThinkBook 13S G2
The 203004-1 (Wistron) motherboard is found in the Lenovo ThinkBook 13S G2. 2 files are indexed for this board: 2 BIOS files.
The BIOS dumps are 16 MB images. The earliest file dates from March 2025 (BIOS Archive).
BIOS dumps 2
From the uploader
THINKBOOK 13S G2 ARE V550 AMD 203004-1 13-MB 203004-1 448.0M502.0011 16MB TESTED OK
Board facts
| Board number | 203004-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 203XXX |
| Also known as | 448.0M502.0011 |
| BIOS chip size | 16 MB |
| First seen | 2025-03-05 |
| Source channels | BIOS Archive |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 203004-1
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.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .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 203004-1 board?
Files in the catalog link 203004-1 to the Lenovo ThinkBook 13S G2.
What BIOS chip size does 203004-1 use?
The BIOS images for 203004-1 are 16 MB.
Who designed the 203004-1 board?
203004-1 is a Wistron board number used by Lenovo.
Are these files free?
2 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
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.