LA-A994P – HP 15 ZS050
LA-A994P is the Compal main board used in the HP 15 ZS050, HP ZS050, HP 250 G3 and HP 15. ChambersDesignInc.com has indexed 22 files for this board — 14 BIOS files, 6 schematics and 5 EC firmware images.
File names mention revision 2.0 or 1.0. The BIOS dumps are 8 MB images. ODM project name: ZSO50. The earliest file dates from September 2017 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 14
Schematics 6
EC / KBC firmware 2
Board facts
| Board number | LA-A994P |
|---|---|
| Designed by | Compal |
| Platform group | LA-A |
| ODM project | ZSO50 |
| Revisions | 2.0, 1.0 |
| BIOS chip size | 8 MB |
| Flash chip | W25Q64 |
| EC / KBC chip | KB9012QF |
| Graphics | UMA (integrated) |
| First seen | 2017-09-05 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics, Laptop & Desktop BIOS Files |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-A994P
- HP 15 ZS050
- HP ZS050
- HP 250 G3
- HP 15
- HP 15-R098SR
- HP 255 G3
- HP Compaq 15-5xxx
- HP G3255
- HP G62T-250
- HP J8D70EA
- HP Pavilion 15
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.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| 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
Who designed the LA-A994P board?
LA-A994P is a Compal board number used by HP.
Which laptops use the LA-A994P board?
Files in the catalog link LA-A994P to the HP 15 ZS050, HP ZS050, HP 250 G3, HP 15, HP 15-R098SR, HP 255 G3, HP Compaq 15-5xxx, HP G3255, HP G62T-250, HP J8D70EA and 1 more.
What BIOS chip size does LA-A994P use?
The BIOS images for LA-A994P are 8 MB. Flash chips named in the files: W25Q64.
Is there a boardview for LA-A994P?
No boardview has been indexed for LA-A994P yet; the schematic is available on this page.
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.