15221-1 – Lenovo IdeaPad 700 15ISK
The Lenovo IdeaPad 700 15ISK and Lenovo IdeaPad 700-15ISK 16 are built on the 15221-1 board designed by Wistron. 14 files are indexed for this board: 9 BIOS files, 4 schematics and 2 boardviews.
The BIOS dumps are 16 MB images. First posted in December 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 9
Schematics 4
Boardviews 1
From the uploader
LENOVO 700-15ISK LOL SKL MB 15221-1M 448.06R01.001M 6tH GEN CPU GTX 950M & ITE8226
Board facts
| Board number | 15221-1 |
|---|---|
| Designed by | Wistron |
| Platform group | 15XXX |
| Also known as | 448.06R01.001M |
| BIOS chip size | 16 MB |
| Flash chip | MX25L128 |
| CPU generation | Intel 6th gen |
| Graphics | discrete GPU |
| First seen | 2017-12-17 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Files |
| About the number | Wistron board numbers look like 15217-1; the first two digits usually indicate the design year. |
Laptops that use 15221-1
- Lenovo IdeaPad 700 15ISK
- Lenovo IdeaPad 700-15ISK 16
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 |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| 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
What BIOS chip size does 15221-1 use?
The BIOS images for 15221-1 are 16 MB. Flash chips named in the files: MX25L128.
Which laptops use the 15221-1 board?
Files in the catalog link 15221-1 to the Lenovo IdeaPad 700 15ISK and Lenovo IdeaPad 700-15ISK 16.
Is there a boardview for 15221-1?
Yes, 2 boardview files.
Who designed the 15221-1 board?
15221-1 is a Wistron 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.