A1 CML 18836-2 448.0HE02.0021 KB9028Q C KBEC OKOK
BIOSECTested
2.6 MB · first posted in BIOS Archive
Get on TelegramWhat the file name tells us
| Brand | Xiaomi |
|---|---|
| Board | 18836-2 |
| Also known as | 448.0HE02.0021 |
| ODM | Wistron |
| Kind | BIOS, EC |
| Format | .rar |
| EC / KBC chip | KB9028Q |
| CPU | Intel 10th gen |
| Archive size | 2.6 MB |
| First posted | 2024-09-03 |
| Channel | BIOS Archive |
| Notes | tested by uploader |
Parsed automatically from the file name and caption. Always compare the board number with the one printed on your board.
What this kind of file is 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 |
Other files for 18836-2
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