18748-1 – HP Envy x360
18748-1 is the Wistron main board used in the HP Envy x360. ChambersDesignInc.com has indexed 3 files for this board — 3 BIOS files and 1 EC firmware image.
BIOS images are 16 MB. First posted in November 2023 in BIOS Archive.
BIOS dumps 3
From the uploader
HP ENVY X360 SABA MB WHL_4 VRAM 18748-1 READ i7-8565U 16MB BID 086B1 BIOS OKOK
Board facts
| Board number | 18748-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 18XXX |
| BIOS chip size | 16 MB |
| CPU generation | Intel 8th gen |
| First seen | 2023-11-04 |
| 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 18748-1
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 |
| .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
Who designed the 18748-1 board?
18748-1 is a Wistron board number used by HP.
Which laptops use the 18748-1 board?
Files in the catalog link 18748-1 to the HP Envy x360.
What BIOS chip size does 18748-1 use?
The BIOS images for 18748-1 are 16 MB.
Are these files free?
1 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
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.