H0220-3 – Lenovo ThinkPad T520
H0220-3 is the Wistron main board used in the Lenovo ThinkPad T520 and Lenovo ThinkPad W520. 3 files are indexed for this board: 2 BIOS files and 1 schematic.
The BIOS dumps are 8 MB images. The earliest file dates from April 2021 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 2
Schematics 1
From the uploader
THINKPAD T520 W520 WISTRON KN3 KENDO-3 UMA H0220-SE H0220-3 SIT 101007 0930 PDF
LENOVO THINKPAD T520 LKN-3 UMA -6 LKN-3 UMA MB H0220-3 48.4KE34.031 SLJ4M W25Q64BV_20230709_95657
Board facts
| Board number | H0220-3 |
|---|---|
| Designed by | Wistron |
| Also known as | 48.4KE34.031 |
| BIOS chip size | 8 MB |
| Flash chip | W25Q64BV, W25Q64CV |
| Graphics | UMA (integrated) |
| First seen | 2021-04-28 |
| 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 H0220-3
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 |
|---|---|---|
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
Questions
Is there a boardview for H0220-3?
No boardview has been indexed for H0220-3 yet; the schematic is available on this page.
Who designed the H0220-3 board?
H0220-3 is a Wistron board number used by Lenovo.
Which laptops use the H0220-3 board?
Files in the catalog link H0220-3 to the Lenovo ThinkPad T520 and Lenovo ThinkPad W520.
What BIOS chip size does H0220-3 use?
The BIOS images for H0220-3 are 8 MB. Flash chips named in the files: W25Q64BV and W25Q64CV.
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.