BIOS image for the ASUS X540LJ notebook, board revision 2.1, in a 3.60 MB RAR. The name marks it as tested and working, which gives some confidence, but the revision printed on your motherboard should still match 2.1. It is intended for programming the SPI flash with a tool such as a CH341A to fix no-boot or corrupted firmware symptoms. Save a backup of the original chip before erasing, and check that the dump length fits the installed flash capacity exactly.
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 (15)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 4 Aug 2020 | Open file on RM Schematics |
| @laptexlaptopbios | 8 Aug 2020 | Open file on RM Schematics |
| @biositechyangiyer | 18 Aug 2020 | Open file on RM Schematics |
| @biositechyangiyer | 27 Aug 2020 | Open file on RM Schematics |
| @biositechyangiyer | 10 Sept 2020 | Open file on RM Schematics |
| @one5technology | 21 Nov 2020 | Open file on RM Schematics |
| @esquematicosespecialista | 27 Oct 2021 | Open file on RM Schematics |
| @esquematicosespecialista | 27 Oct 2021 | Open file on RM Schematics |
| @BiosSchematicWorld | 11 Dec 2021 | Open file on RM Schematics |
| @BiosSchematicWorld | 19 Dec 2021 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
| @skclappybios | 10 Apr 2024 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 13 Jul 2025 | 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 →