LA-E921P – Acer Predator Helios 300
The Acer Predator Helios 300, Acer G3-571, Acer Predator 571 and Acer Predator Helios 300 G3 are built on the LA-E921P board designed by Compal. ChambersDesignInc.com has indexed 14 files for this board — 9 BIOS files, 4 schematics, 2 boardviews and 2 EC firmware images.
Revisions seen in file names: 1B, 1.0 and B1. ODM project name: C5PRH. First posted in October 2020 in BIOS Archive, Cyberlan Electronics and Schematics & Boardviews Archive.
BIOS dumps 9
Schematics 3
Boardviews 2
Board facts
| Board number | LA-E921P |
|---|---|
| Designed by | Compal |
| Platform group | LA-E |
| ODM project | C5PRH |
| Revisions | 1B, 1.0, B1 |
| First seen | 2020-10-12 |
| Source channels | BIOS Archive, Cyberlan Electronics, Schematics & Boardviews Archive |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-E921P
- Acer Predator Helios 300
- Acer G3-571
- Acer Predator 571
- Acer Predator Helios 300 G3
- Acer Predator G3-571
- Acer G3 571-77QKC5PRH
- Acer G3 572
- Acer Predator Helios G3-571
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .brd | .brd boardview (Test_Link format) | OpenBoardView, FlexBV or BoardViewer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Which laptops use the LA-E921P board?
Files in the catalog link LA-E921P to the Acer Predator Helios 300, Acer G3-571, Acer Predator 571, Acer Predator Helios 300 G3, Acer Predator G3-571, Acer G3 571-77QKC5PRH, Acer G3 572 and Acer Predator Helios G3-571.
Is there a boardview for LA-E921P?
Yes, 2 boardview files in .bdv and .brd format.
Who designed the LA-E921P board?
LA-E921P is a Compal board number used by Acer.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.