12275-1 – Dell Latitude 3330
12275-1 is the Wistron main board used in the Dell Latitude 3330 and Dell Latitude E3330. The catalog lists 9 files for it: 8 BIOS files, 1 schematic and 1 EC firmware image.
BIOS images are 4 MB and 8 MB. The earliest file dates from February 2018 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 8
Schematics 1
Board facts
| Board number | 12275-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 12XXX |
| BIOS chip size | 4 MB, 8 MB |
| Flash chip | 25Q32FV |
| First seen | 2018-02-06 |
| 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 12275-1
- Dell Latitude 3330
- Dell Latitude E3330
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.
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 |
|---|---|---|
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
Questions
Which laptops use the 12275-1 board?
Files in the catalog link 12275-1 to the Dell Latitude 3330 and Dell Latitude E3330.
Is there a boardview for 12275-1?
No boardview has been indexed for 12275-1 yet; the schematic is available on this page.
What BIOS chip size does 12275-1 use?
The BIOS images for 12275-1 are 4 MB and 8 MB. Flash chips named in the files: 25Q32FV.
Who designed the 12275-1 board?
12275-1 is a Wistron board number used by Dell.
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.