18836-1 – Xiaomi XMA1901-AG
The Xiaomi XMA1901-AG is built on the 18836-1 board designed by Wistron. The catalog lists 4 files for it: 4 BIOS files.
The earliest file dates from October 2023 (BIOS Archive).
BIOS dumps 4
Board facts
| Board number | 18836-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 18XXX |
| Also known as | 448.0HE02.0011, 448.0HE03.0011 |
| First seen | 2023-10-21 |
| 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 18836-1
- Xiaomi XMA1901-AG
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
Which laptops use the 18836-1 board?
Files in the catalog link 18836-1 to the Xiaomi XMA1901-AG.
Who designed the 18836-1 board?
18836-1 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.