BIOS dump for the Wistron 08252-2 motherboard with the JV50-PU MB code and part number 48.4CH01.021, labelled as a working BIOS tested at 100 percent. The 3.17 MB RAR archive is intended for reprogramming the SPI flash chip when a laptop shows no display or fails to boot because of corrupted firmware. Wistron uses this five-digit numbering with a revision suffix, so confirm both numbers on the PCB. Back up the original chip before writing and check that the image matches its capacity.
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 (12)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 1 Oct 2023 | Open file on RM Schematics |
| @generalbios | 2 Oct 2023 | Open file on RM Schematics |
| @generalbios | 4 Oct 2023 | Open file on RM Schematics |
| @generalbios | 4 Oct 2023 | Open file on RM Schematics |
| @generalbios | 8 Oct 2023 | Open file on RM Schematics |
| @generalbios | 9 Oct 2023 | Open file on RM Schematics |
| @generalbios | 9 Oct 2023 | Open file on RM Schematics |
| @generalbios | 13 Oct 2023 | Open file on RM Schematics |
| @generalbios | 15 Oct 2023 | Open file on RM Schematics |
| @generalbios | 20 Oct 2023 | Open file on RM Schematics |
| @generalbios | 26 Oct 2023 | Open file on RM Schematics |
| @dtechbios | 30 Oct 2024 | 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 →