LA-E552P – Lenovo Yoga 720
LA-E552P is the Compal main board used in the Lenovo Yoga 720 and Lenovo Yoga 720-15IKB. The catalog lists 2 files for it: 2 BIOS files and 1 EC firmware image.
Revisions seen in file names: 1.0. The BIOS dumps are 1 MB and 8 MB images. ODM project name: CIZY5. First posted in August 2021 in BIOS Archive.
BIOS dumps 2
Board facts
| Board number | LA-E552P |
|---|---|
| Designed by | Compal |
| Platform group | LA-E |
| ODM project | CIZY5 |
| Revisions | 1.0 |
| BIOS chip size | 1 MB, 8 MB |
| Flash chip | GD25Q64B |
| First seen | 2021-08-11 |
| Source channels | BIOS Archive |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-E552P
- Lenovo Yoga 720
- Lenovo Yoga 720-15IKB
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.
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 |
|---|---|---|
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| .rar | RAR archive | 7-Zip or WinRAR |
Questions
Which laptops use the LA-E552P board?
Files in the catalog link LA-E552P to the Lenovo Yoga 720 and Lenovo Yoga 720-15IKB.
What BIOS chip size does LA-E552P use?
The BIOS images for LA-E552P are 1 MB and 8 MB. Flash chips named in the files: GD25Q64B.
Who designed the LA-E552P board?
LA-E552P is a Compal board number used by Lenovo.
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.