11291-1 – Lenovo LG4858
The Lenovo LG4858 and Lenovo G580 are built on the 11291-1 board designed by Wistron. 8 files are indexed for this board: 5 BIOS files, 1 schematic and 2 boardviews.
The earliest file dates from October 2019 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 5
Schematics 1
Boardviews 2
Board facts
| Board number | 11291-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 11XXX |
| Also known as | 48.4SG06.011, 48.4SG16.011 |
| Graphics | UMA (integrated) |
| First seen | 2019-10-23 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics, Laptop & Desktop BIOS Files |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 11291-1
- Lenovo LG4858
- Lenovo G580
- Lenovo LG4858L-UMA
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 |
|---|---|---|
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .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
Is there a boardview for 11291-1?
Yes, 2 boardview files.
Which laptops use the 11291-1 board?
Files in the catalog link 11291-1 to the Lenovo LG4858 and Lenovo G580.
Who designed the 11291-1 board?
11291-1 is a Wistron board number used by Lenovo.
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.