Samsung Android Modem Device Driver -mss Ver.3-

| Module Name | Function | |-------------|----------| | sipc_modem.ko | Core IPC handling, link control | | mss_modem.ko | MSS-specific operations, power management | | modem_ctrl.ko | Modem boot, reset, crash recovery | | modem_pm.ko | Sleep/resume sequencing |

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The Samsung Android Modem Device Driver -MSS Ver.3- (often associated with the file ssudmdm.sys) is a critical software component developed by DEVGURU Co., LTD. that allows a Windows PC to communicate with the modem hardware of a Samsung smartphone or tablet.  Core Functionality 

Modem Communication: This driver specifically handles data communication protocols, allowing your computer to recognize the Samsung device as a modem.

USB Connectivity: It is part of the broader Samsung USB Driver for Mobile Phones package required for tasks like data transfer, firmware updates, and USB tethering. samsung android modem device driver -mss ver.3-

Developer Support: It enables advanced functions for developers, such as debugging via the Android Debug Bridge (ADB) or flashing firmware using tools like ODIN.  Key Components & Technical Details  Feature  Associated File

ssudmdm.sys (Modem Driver) and ssudbus.sys (Composite Device Driver) Developer DEVGURU Co., LTD. Location

Typically found in C:\Program Files (x86)\Samsung\USB Drivers\ Common Service

Often runs as the MSS CS Connectivity Service (ss_conn_service.exe) Common Issues and Solutions  | Module Name | Function | |-------------|----------| |

Compatibility Errors: Users frequently encounter this driver in Windows 11 "Memory Integrity" warnings, where it may be flagged as an incompatible driver.

System Stability: Outdated versions of this driver have been linked to Blue Screen of Death (BSOD) errors, such as VIDEO_DXGKRNL_FATAL_ERROR. Troubleshooting Steps:

Update: Download the latest version from the Samsung Developer Portal to resolve bugs.

Uninstall: If you no longer use a Samsung device or experience crashes, you can remove it via Control Panel > Uninstall a program. This paper describes the architecture

Manual Removal: For persistent "Memory Integrity" issues, you can locate the file in C:\Windows\System32, rename it to .old, and restart your PC.  Video DXGKRNL Fatal Error - Microsoft Q&A

This paper describes the architecture, components, driver model, integration, and development/testing considerations for the Samsung Android modem device driver — MSS (Modem Subsystem) version 3. It covers hardware interface, kernel driver structure, user-space components, power and performance management, QoS and network interfaces, security considerations, troubleshooting, and recommended development/testing workflows.

Typical device tree node for MSS v3 on an Exynos 2200 device:

mss: mss@0x40000000 
    compatible = "samsung,exynos-mss-v3";
    reg = <0x40000000 0x2000000>,   /* CP shared memory */
          <0x10860000 0x1000>;      /* MSS control registers */
    interrupts = <GIC_SPI 456 IRQ_TYPE_LEVEL_HIGH>;
    mbox-names = "mss0", "mss1";
    mboxes = <&mss_mbox 0>, <&mss_mbox 1>;
    power-domains = <&pd_cp>;
    firmware-name = "mss_fw.bin";
    samsung,shmem-size = <0x800000>;
;