ASUS UX431F NB8621-PCB-MB-V2 16MB BIOS
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This is an announcement post (photo + description); the file itself is distributed by the channel owner.
What the file name tells us
| Brand | Asus |
|---|---|
| Model | Asus ZenBook UX431F |
| Model | Asus ZenBook NB8621-PCB |
| Kind | BIOS, Boardview |
| Format | .pcb |
| Chip size | 16 MB |
| First posted | 2026-07-08 |
| Channel | BIOS Archive |
| Notes | VIP / paid post |
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.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .pcb | .pcb board file | FlexBV or the viewer it was exported from |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |