LA-5681P – Acer 4740G
The Acer 4740G is built on the LA-5681P board designed by Compal. 3 files are indexed for this board: 2 BIOS files, 1 schematic and 1 EC firmware image.
File names mention revision 1.0 or 1A. ODM project name: NALG0. The earliest file dates from January 2018 (BIOS Archive and Schematics & Boardviews Archive).
BIOS dumps 2
Schematics 1
Board facts
| Board number | LA-5681P |
|---|---|
| Designed by | Compal |
| Platform group | LA-5 |
| ODM project | NALG0 |
| Revisions | 1.0, 1A |
| First seen | 2018-01-25 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-5681P
- Acer 4740G
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 |
|---|---|---|
| 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
Which laptops use the LA-5681P board?
Files in the catalog link LA-5681P to the Acer 4740G.
Is there a boardview for LA-5681P?
No boardview has been indexed for LA-5681P yet; the schematic is available on this page.
Who designed the LA-5681P board?
LA-5681P is a Compal board number used by Acer.
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.