Original backup BIOS for the Dell Inspiron 15 3552, Intel version, on a Wistron board numbered 14279-1. Wistron prints five digit board codes with a revision suffix on the PCB, so confirm it reads 14279-1. The 4.26 MB RAR contains a read taken from a working unit, useful for reprogramming the SPI flash on a board with damaged firmware. Back up the chip on your board before writing, since it carries the service tag, and make sure the dump size equals the flash chip capacity.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
All sources (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 20 Sept 2020 | Open file on RM Schematics |
| @biositechyangiyer | 5 Oct 2020 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 9 Dec 2025 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →