09920-2 – Acer 4741
The 09920-2 (Wistron) motherboard is found in the Acer 4741. ChambersDesignInc.com has indexed 2 files for this board — 2 BIOS files and 1 EC firmware image.
First posted in June 2021 in BIOS Archive.
BIOS dumps 2
Board facts
| Board number | 09920-2 |
|---|---|
| Designed by | Wistron |
| Platform group | 09XXX |
| Also known as | 48.4GY02.021 |
| First seen | 2021-06-23 |
| 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 09920-2
- Acer 4741
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.
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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the 09920-2 board?
09920-2 is a Wistron board number used by Acer.
Which laptops use the 09920-2 board?
Files in the catalog link 09920-2 to the Acer 4741.
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.