18836-2
18836-2 is a Wistron Xiaomi main board number. The catalog lists 8 files for it: 8 BIOS files and 1 EC firmware image.
The earliest file dates from August 2021 (BIOS Archive).
BIOS dumps 8
From the uploader
BIOS XMA1901-DI A1_CML 18836-2 448.0HE02021 i5-10210u 8G MX250 CLR ME
Board facts
| Board number | 18836-2 |
|---|---|
| Designed by | Wistron |
| Platform group | 18XXX |
| Also known as | 448.0HE02.0021 |
| EC / KBC chip | KB9028Q |
| GPU | MX250 |
| CPU generation | Intel 10th gen |
| Graphics | discrete GPU |
| First seen | 2021-08-16 |
| Source channels | BIOS Archive |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
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 18836-2 board?
18836-2 is a Wistron board number used by Xiaomi.
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.