BIOS image for the Dell 3550 laptop built on mainboard LA-B072P, provided as a 4.27 MB RAR. The LA prefix marks a Compal-designed board, which matches the Latitude 3550 platform. Technicians use the file to rewrite the SPI chip with a programmer when the machine shows no display or will not start after a bad update. Check the LA-B072P marking on the PCB, back up the original contents first to keep the service tag, and make sure the image size fits the flash chip.
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 (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 21 Jan 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 28 Oct 2019 | 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 →