Zipped BIOS dump for a Lenovo B570 laptop, labelled with the number 20093, the LZ57 motherboard and the DIS discrete-graphics variant, read from a 25L3206E flash chip. The 25L3206E is a 32 Mbit (4 MB) SPI part, so the extracted image should be exactly 4 MB. Discrete and UMA boards use different firmware, so confirm the board has a dedicated GPU fitted before writing. Save a copy of the original chip with a programmer, then flash and verify the result to restore a board that fails to POST.
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 | 12 Feb 2018 | Open file on RM Schematics |
| @biositechyangiyer | 19 May 2020 | Open file on RM Schematics |
| @one5technology | 10 Nov 2020 | Open file on RM Schematics |
| @biosdumpcomputer | 25 May 2022 | Open file on RM Schematics |
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Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →