11248-4 – Lenovo ThinkPad L430
11248-4 is the Wistron main board used in the Lenovo ThinkPad L430. 2 files are indexed for this board: 1 BIOS file and 1 schematic.
BIOS images are 1 MB and 8 MB. First posted in March 2019 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 1
Schematics 1
Board facts
| Board number | 11248-4 |
|---|---|
| Designed by | Wistron |
| Platform group | 11XXX |
| Also known as | 48.4SE01.041 |
| BIOS chip size | 1 MB, 8 MB |
| First seen | 2019-03-17 |
| 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 11248-4
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 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 11248-4?
No boardview has been indexed for 11248-4 yet; the schematic is available on this page.
Who designed the 11248-4 board?
11248-4 is a Wistron board number used by Lenovo.
Which laptops use the 11248-4 board?
Files in the catalog link 11248-4 to the Lenovo ThinkPad L430.
What BIOS chip size does 11248-4 use?
The BIOS images for 11248-4 are 1 MB and 8 MB.
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.