11264-1 – Lenovo LA48
The Lenovo LA48, Lenovo Wifi B490, Lenovo B480 and Lenovo B580 are built on the 11264-1 board designed by Wistron. ChambersDesignInc.com has indexed 11 files for this board — 8 BIOS files, 3 schematics and 1 EC firmware image.
The BIOS dumps are 4 MB and 8 MB images. The earliest file dates from January 2018 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 8
Schematics 3
Board facts
| Board number | 11264-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 11XXX |
| Also known as | 48.4TD01.01M, 48.4TD06.01M, 48.4TD07.01M |
| BIOS chip size | 4 MB, 8 MB |
| First seen | 2018-01-08 |
| 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 11264-1
- Lenovo LA48
- Lenovo Wifi B490
- Lenovo B480
- Lenovo B580
- Lenovo B590-WISTRON
- Lenovo M490
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .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 11264-1 board?
11264-1 is a Wistron board number used by Lenovo.
Which laptops use the 11264-1 board?
Files in the catalog link 11264-1 to the Lenovo LA48, Lenovo Wifi B490, Lenovo B480, Lenovo B580, Lenovo B590-WISTRON and Lenovo M490.
What BIOS chip size does 11264-1 use?
The BIOS images for 11264-1 are 4 MB and 8 MB.
Is there a boardview for 11264-1?
No boardview has been indexed for 11264-1 yet; the schematic is available on this page.
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.