Samsung Android Modem Device Driver Mss Ver3 Link May 2026

| Link Type | Purpose | How to Access | |-----------|---------|----------------| | IPC Link | Sending AT commands, data call | /dev/umts_ipc0 (write AT, read response) | | DIAG Link | QXDM/QUDT logging (Snapdragon) or Samsung DCI | /dev/diag (Snapdragon) or /dev/modem_logging (Exynos) | | Boot/Download Link | Flashing modem firmware | /dev/umts_boot0 – use downloader tool | | MIPC (Modem IPC over PCIe) | High-throughput NR data | Exposed as rmnet or mipi interface |

Step 1: Remove old drivers Open Device Manager. Expand "Modems" or "Samsung Android Device". Right-click any existing entries and select Uninstall device. Check "Delete the driver software for this device."

Step 2: Disable Driver Signature Enforcement (Critical for MSS Ver3) Because MSS Ver3 is a kernel-mode driver, Windows may reject it.

Step 3: Install the Samsung USB Driver Run the Samsung_USB_Driver_for_Mobile_Phones.exe (v1.7.86+). During installation, you will see a component named "Samsung Mobile Modem Device" – ensure it is checked. samsung android modem device driver mss ver3 link

Step 4: Manually update the driver (if Windows fails to use MSS Ver3)

Step 5: Verify installation Open Command Prompt as admin and run:

pnputil /enum-drivers | findstr "mss"

You should see: Published Name: oemXX.inf - mssver3 link driver | Link Type | Purpose | How to

In Device Manager, the device should now show as Samsung Mobile Modem Device (MSS Ver3) with no errors.

Cause: The device is exiting Download Mode due to a watchdog timer. Fix: Use a USB 2.0 port (not USB 3.0/3.1). The Ver3 link has known signal integrity issues on blue USB 3 ports. Also, use a high-quality, short USB cable.

In Samsung’s modem architecture (often based on Intel/Infineon or Samsung Shannon/Exynos Modems), MSS stands for Modem SubSystem. This is a dedicated core or region within the System-on-Chip (SoC) that handles: Step 1: Remove old drivers Open Device Manager

dd if=/dev/block/modem_dump of=/sdcard/modem_dump.bin

Developers working on custom AOSP ROMs or GSI (Generic System Images) need this driver to debug the RIL. Without the MSS Ver3 link, logcat -b radio will show "RILJ: Socket connection failed."