H0223-4 – Lenovo ThinkPad T420S
The H0223-4 (Wistron) motherboard is found in the Lenovo ThinkPad T420S. ChambersDesignInc.com has indexed 3 files for this board — 1 BIOS file and 2 boardviews.
The earliest file dates from September 2021 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 1
Boardviews 2
Board facts
| Board number | H0223-4 |
|---|---|
| Designed by | Wistron |
| Graphics | UMA (integrated) |
| First seen | 2021-09-30 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use H0223-4
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 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 |
| .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
Who designed the H0223-4 board?
H0223-4 is a Wistron board number used by Lenovo.
Is there a boardview for H0223-4?
Yes, 2 boardview files in .bdv format.
Which laptops use the H0223-4 board?
Files in the catalog link H0223-4 to the Lenovo ThinkPad T420S.
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.