MS-1688 – MSI CX620
The MSI CX620 and MSI CX620MX are built on the MS-1688 board. ChambersDesignInc.com has indexed 2 files for this board — 2 BIOS files and 1 EC firmware image.
File names mention revision 1.1 or 2.0. The BIOS dumps are 4 MB and 64 MB images. The earliest file dates from August 2018 (BIOS Archive).
BIOS dumps 2
From the uploader
Model: MSI CX620 (MS-1688)
Platform: MS-16881
Rev: 1.1
Dumps: Main & EC
Main Flash: Macronix MX25L3205D (SPI_SOCK3)
EC Flash: Macronix MX25L512 (U37
Model: MSI CX620MX ( MS-1688)
Motherboard : MS-16881 Rev 2.0
HM55 chipset, Ati HD545V
Bios 4mb + EC 64kb
Board facts
| Board number | MS-1688 |
|---|---|
| Designed by | MSI |
| Platform group | MS-1688 |
| Revisions | 1.1, 2.0 |
| BIOS chip size | 4 MB, 64 MB |
| Flash chip | MX25L3205D, MX25L512 |
| First seen | 2018-08-04 |
| Source channels | BIOS Archive |
| About the number | MSI board numbers start with MS-: MS-1xxxx for notebooks, MS-7xxx for desktop boards (also used in HP, Lenovo and other OEM PCs), MS-Vxxx for graphics cards. |
Laptops that use MS-1688
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 |
|---|---|---|
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
What BIOS chip size does MS-1688 use?
The BIOS images for MS-1688 are 4 MB and 64 MB. Flash chips named in the files: MX25L3205D and MX25L512.
Which laptops use the MS-1688 board?
Files in the catalog link MS-1688 to the MSI CX620 and MSI CX620MX.
Who designed the MS-1688 board?
MS-1688 is an MSI board number.
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.