BIOS image for a board with the project name Petra, in the UMA version (integrated graphics only, no discrete GPU), part number 48.4VM02.011. The 48.4 prefix is typical of Wistron board numbering, and the full code printed on the PCB should match before use. No laptop brand or model is given. The 3.09 MB ZIP is used for SPI flash recovery with an external programmer. Save the original chip contents first and confirm the image size matches the chip.
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 @bios_laptop. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @bios_laptop | 15 Jun 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 27 May 2023 | 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 →