BIOS firmware for the Lenovo ThinkPad L520 on Quanta board DA0GC8MB8D0, revision D. The DA0 prefix with MB marks Quanta board numbering, here the GC8 project. Use the archive to reprogram the flash chip when the laptop is dead or stuck after a failed update. ThinkPads store serial and UUID data in the BIOS, so read and keep the original chip contents before writing, and make sure the revision letter on the PCB matches.
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 (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 2 Aug 2021 | Open file on RM Schematics |
| @BiosSchematicWorld | 24 Nov 2021 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 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 →