Tested BIOS dump for the Dell Latitude 5520 laptop with motherboard number 213253-1, in a RAR archive of about 35.3 MB. The five or six digit number with a dash suffix follows the Wistron numbering pattern, the ODM that builds many Latitude boards. A dump like this is flashed to the SPI chip with a programmer to recover a board stuck on no POST or with damaged firmware. Confirm the board number on the PCB, keep a copy of the original chip, and use the image that matches the chip size.
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 | 23 Aug 2023 | Open file on RM Schematics |
| @generalbios | 12 Oct 2023 | Open file on RM Schematics |
| @generalbios | 19 Oct 2023 | Open file on RM Schematics |
| @dtechbios | 14 Feb 2026 | 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 →