BIOS package for the Dell Precision 3561, board number 203005-1, delivered as a 14.9 MB RAR archive. The index lists Apple as the brand, but the name clearly points to a Dell workstation laptop. Numbers in this form are typical of Wistron, a Dell ODM. Such a dump is written to the SPI flash with a programmer to recover a board that fails to POST or has corrupt firmware. Unpack the archive, check that the image sizes match the flash chips, and back up the original contents before writing.
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 @sbiosworldchannel. 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 | |
|---|---|---|
| @sbiosworldchannel | 28 Feb 2026 | Open file on RM Schematics |
| @skclappybios | 28 Feb 2026 | Open file on RM Schematics |
| @sboisworld | 28 Feb 2026 | Open file on RM Schematics |
| @dtechbios | 28 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 →