LA-B092P – Lenovo B50-70
The Lenovo B50-70, Lenovo 20384, Lenovo 128 and Lenovo 20385 are built on the LA-B092P board designed by Compal. ChambersDesignInc.com has indexed 18 files for this board — 15 BIOS files, 2 schematics and 2 EC firmware images.
Revisions seen in file names: 1.0, 3.0 and 2.0. BIOS images are 8 MB. ODM project names: ZIWB3, ZIWB2, ZIWE1 and ZIWB1. First posted in September 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 15
Schematics 2
EC / KBC firmware 1
From the uploader
Lenovo B50-70 Compal LA-B092P rev:1.0 BIOS &EC
Board facts
| Board number | LA-B092P |
|---|---|
| Designed by | Compal |
| Platform group | LA-B |
| ODM project | ZIWB3, ZIWB2, ZIWE1, ZIWB1 |
| Revisions | 1.0, 3.0, 2.0 |
| BIOS chip size | 8 MB |
| First seen | 2017-09-06 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-B092P
- Lenovo B50-70
- Lenovo 20384
- Lenovo 128
- Lenovo 20385
- Lenovo B5070
- Lenovo ThinkPad E40
- Lenovo U1
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 |
|---|---|---|
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| 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 |
Questions
Which laptops use the LA-B092P board?
Files in the catalog link LA-B092P to the Lenovo B50-70, Lenovo 20384, Lenovo 128, Lenovo 20385, Lenovo B5070, Lenovo ThinkPad E40 and Lenovo U1.
Is there a boardview for LA-B092P?
No boardview has been indexed for LA-B092P yet; the schematic is available on this page.
Who designed the LA-B092P board?
LA-B092P is a Compal board number used by Lenovo.
What BIOS chip size does LA-B092P use?
The BIOS images for LA-B092P are 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.