12289-2 – Lenovo ThinkPad L440
The 12289-2 (Wistron) motherboard is found in the Lenovo ThinkPad L440 and Lenovo ThinkPad T440. The catalog lists 5 files for it: 5 BIOS files.
BIOS images are 1 MB and 8 MB. First posted in December 2018 in BIOS Archive.
BIOS dumps 5
From the uploader
LENOVO T440 LOS-1 MB 12289-2 48.4LG0H.021
UNLOCK BIOS
FAST BOOT OKOK
FAN SPEED OK
WIFI DETECT OK
Board facts
| Board number | 12289-2 |
|---|---|
| Designed by | Wistron |
| Platform group | 12XXX |
| Also known as | 48.4LG01.021, 48.4LG03.021, 48.4LG0H.021 |
| BIOS chip size | 1 MB, 8 MB |
| First seen | 2018-12-26 |
| Source channels | BIOS Archive |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 12289-2
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.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .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
What BIOS chip size does 12289-2 use?
The BIOS images for 12289-2 are 1 MB and 8 MB.
Which laptops use the 12289-2 board?
Files in the catalog link 12289-2 to the Lenovo ThinkPad L440 and Lenovo ThinkPad T440.
Who designed the 12289-2 board?
12289-2 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.