BIOS dump for the Lenovo IdeaPad 700-15ISK, labelled with the number 15221 and a 1M tag in the name, packed as a 4.57 MB RAR archive. The exact meaning of those tokens is not stated, so open the archive and check the image size against the SPI flash chip on your board before use. A dump like this is written with a hardware programmer such as a CH341A when the original firmware is corrupted or the laptop will not post. Always read and save the existing chip contents first so you can return to the factory state if needed.
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 | 10 Nov 2020 | Open file on RM Schematics |
| @biositechyangiyer | 2 Dec 2020 | Open file on RM Schematics |
| @biositechyangiyer | 1 Feb 2021 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | 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 →