18778-1 – Dell 5490
The Dell 5490, Dell Inspiron 5490, Dell Vostro 18778 and Dell Vostro 5590 are built on the 18778-1 board designed by Wistron. ChambersDesignInc.com has indexed 5 files for this board — 3 BIOS files, 1 schematic and 1 boardview.
BIOS images are 8 MB and 16 MB. The earliest file dates from January 2022 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 3
Schematics 1
Boardviews 1
Board facts
| Board number | 18778-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 18XXX |
| BIOS chip size | 8 MB, 16 MB |
| CPU generation | Intel 10th gen |
| First seen | 2022-01-26 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 18778-1
- Dell 5490
- Dell Inspiron 5490
- Dell Vostro 18778
- Dell Vostro 5590
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.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
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 |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Is there a boardview for 18778-1?
Yes, 1 boardview file in .bdv format.
Who designed the 18778-1 board?
18778-1 is a Wistron board number used by Dell.
What BIOS chip size does 18778-1 use?
The BIOS images for 18778-1 are 8 MB and 16 MB.
Which laptops use the 18778-1 board?
Files in the catalog link 18778-1 to the Dell 5490, Dell Inspiron 5490, Dell Vostro 18778 and Dell Vostro 5590.
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.