LA-J551P
The LA-J551P board comes from Compal. 7 files are indexed for this board: 4 BIOS files, 2 schematics, 1 boardview and 1 EC firmware image.
Revisions seen in file names: 2B, 1.0 and 1A. BIOS images are 16 MB. ODM project name: FLMS0. The earliest file dates from February 2022 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 4
Schematics 2
Boardviews 1
Board facts
| Board number | LA-J551P |
|---|---|
| Designed by | Compal |
| Platform group | LA-J |
| ODM project | FLMS0 |
| Revisions | 2B, 1.0, 1A |
| BIOS chip size | 16 MB |
| First seen | 2022-02-06 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
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 |
| .cad | .cad boardview | FlexBV, OpenBoardView 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
Are these files free?
1 of the posts are marked VIP or paid in their source channel; the others are ordinary posts. ChambersDesignInc.com does not host or sell files.
Who designed the LA-J551P board?
LA-J551P is a Compal board number used by Lenovo.
What BIOS chip size does LA-J551P use?
The BIOS images for LA-J551P are 16 MB.
Is there a boardview for LA-J551P?
Yes, 1 boardview file in .bdv and .cad format.
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.