Onboard RAM disable BIOS for the ASUS X54C and K54C, which share a board, revision 2.1. This modification is used when the soldered memory fails and the notebook will not post, allowing it to run on a module in the SO-DIMM slot. The image is flashed to the SPI chip with an external programmer. Check that the board is marked rev 2.1, store a full backup of the original flash, and make sure the image size fits the chip before programming and testing with known-good RAM.
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 (16)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 26 Sept 2017 | Open file on RM Schematics |
| @abgm_manutencao_bios | 8 Aug 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 6 Nov 2019 | Open file on RM Schematics |
| @laptexlaptopbios | 4 Feb 2022 | Open file on RM Schematics |
| @pepeelectronica | 21 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 23 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 12 Nov 2022 | Open file on RM Schematics |
| @skclappybios | 25 Nov 2022 | Open file on RM Schematics |
| @skclappybios | 11 Jul 2023 | Open file on RM Schematics |
| @skclappybios | 8 Jun 2025 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →