BIOS firmware archive for the Acer Aspire 5552, with the name giving the model code PEW76 and firmware version V1.04. The RAR file is about 1003 KB, which suggests a roughly 1 MB image for an 8 Mbit SPI flash chip. Technicians use a dump like this to recover a board that powers on with no display or is stuck in a boot loop, writing it with a programmer such as a CH341A. Before flashing, read and save the original chip contents and confirm the image size equals the chip capacity, otherwise the write will fail or brick the board.
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 .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 →