NM-A481 – Lenovo IdeaPad 300 15ISK
The NM-A481 (LCFC) motherboard is found in the Lenovo IdeaPad 300 15ISK, Lenovo IdeaPad 300, Lenovo IdeaPad 151SK and Lenovo IdeaPad 15ISK300 15ISK. The catalog lists 18 files for it: 16 BIOS files, 2 schematics and 1 EC firmware image.
Revisions seen in file names: 1.0 and 0.3. The BIOS dumps are 8 MB images. ODM project names: BMWQ1, BMWQ2, MBWQ2 and BMWC1. The earliest file dates from February 2017 (BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics).
BIOS dumps 16
Schematics 2
From the uploader
LENOVO IDEAPAD 300-15ISK BMWQ1 BMWQ2 NM-A481 REV 1.0 2015-07-22 UC3
LENOVO IDEAPAD 300-15ISK BMWQ1 BMWQ2 NM-A481 REV 1.0 2015-07-22 6th GEN AMD GPU
LENOVO IDEAPAD 300-15ISK BMWQ1 BMWQ2 NM-A481 REV 1.0 2015-07-22 i7-6500u UC3 SSD PROBLEM FIXED
Board facts
| Board number | NM-A481 |
|---|---|
| Designed by | LCFC |
| Platform group | NM-A |
| ODM project | BMWQ1, BMWQ2, MBWQ2, BMWC1 |
| Revisions | 1.0, 0.3 |
| BIOS chip size | 8 MB |
| Flash chip | 25Q64FVSIQ |
| CPU generation | Intel 6th gen |
| First seen | 2017-02-07 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Files |
| About the number | LCFC is Lenovo's joint venture with Compal; its main boards use NM- numbers and sub-boards NS- numbers. |
Laptops that use NM-A481
- Lenovo IdeaPad 300 15ISK
- Lenovo IdeaPad 300
- Lenovo IdeaPad 151SK
- Lenovo IdeaPad 15ISK300 15ISK
- Lenovo IdeaPad 300-151SK
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 |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| 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 |
Questions
Is there a boardview for NM-A481?
No boardview has been indexed for NM-A481 yet; the schematic is available on this page.
What BIOS chip size does NM-A481 use?
The BIOS images for NM-A481 are 8 MB. Flash chips named in the files: 25Q64FVSIQ.
Which laptops use the NM-A481 board?
Files in the catalog link NM-A481 to the Lenovo IdeaPad 300 15ISK, Lenovo IdeaPad 300, Lenovo IdeaPad 151SK, Lenovo IdeaPad 15ISK300 15ISK and Lenovo IdeaPad 300-151SK.
Who designed the NM-A481 board?
NM-A481 is an LCFC 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.