BM5070 – Lenovo Legion S7-15ACH6
The BM5070 (Bitland) motherboard is found in the Lenovo Legion S7-15ACH6. 3 files are indexed for this board: 1 BIOS file, 1 schematic and 1 boardview.
Revisions seen in file names: 1.0. The earliest file dates from December 2023 (Schematics & Boardviews Archive and BIOS Archive).
BIOS dumps 1
Schematics 1
Boardviews 1
Board facts
| Board number | BM5070 |
|---|---|
| Designed by | Bitland |
| Revisions | 1.0 |
| First seen | 2023-12-05 |
| Source channels | Schematics & Boardviews Archive, BIOS Archive |
| About the number | Bitland boards for Lenovo IdeaPad models are named BM followed by four digits. |
Laptops that use BM5070
- Lenovo Legion S7-15ACH6
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 |
| .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 |
| .tvw | Tebo-ICT .tvw boardview | FlexBV or Tebo-ICT View |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
Questions
Who designed the BM5070 board?
BM5070 is a Bitland board number used by Lenovo.
Is there a boardview for BM5070?
Yes, 1 boardview file in .bdv and .tvw format.
Which laptops use the BM5070 board?
Files in the catalog link BM5070 to the Lenovo Legion S7-15ACH6.
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.