The designation typically refers to Mobile Software Solutions or specific diagnostic protocols used by Samsung. The "Ver.3" indicates the third generation or iteration of this specific driver architecture, designed to handle high-speed data transfers and stable tethering for modern LTE and 5G devices. What Does It Actually Do? The driver performs three primary roles:
: It establishes low-level COM port diagnostics required by tools like Samsung Odin to unbrick devices, execute custom recoveries, or upgrade stock firmware.
#define MSS_V3_IOCTL_MAGIC 'M' #define MSS_V3_SET_CHAN_MODE _IOW(MAGIC, 1, int) #define MSS_V3_GET_STATS _IOR(MAGIC, 2, struct mss_stats) #define MSS_V3_TRIGGER_CRASH _IO(MAGIC, 3)
E IPC_RTR : mss_ver3_recv_data: invalid header E MSS_V3 : tx timeout on channel 7
The refers to a specific driver version used to enable Windows PCs to communicate with Samsung mobile devices as modems or composite USB devices. This driver is essential for tasks like using your phone for USB tethering, flashing firmware via Odin , or executing AT commands through software like Realterm. Where to Find and Download
To resolve this issue and restore full system security, use the manual removal and update technique outlined below: Method 1: Isolating the Driver via Device Manager
Avoid third-party driver download sites, as they often contain malware. Disconnect your phone from the PC.
Provides the interface needed for ADB (Android Debug Bridge) , allowing developers to test apps or send commands to the device.
If you no longer use the driver, it can be uninstalled via the Device Manager or by renaming the ssudbus.sys file to ssudbus.old in your system folders to bypass the security block. 🛠️ Installation & Compatibility Samsung Android USB Driver
| SoC | Modem | MSS Driver Version | |-----|-------|--------------------| | Exynos 2100 | Exynos Modem 5123 | MSS Ver.3 (native) | | Exynos 2200 | Exynos Modem 5300 | MSS Ver.3.2 | | Snapdragon 888 | X60 | Uses Qualcomm’s msm_ipc – simulated MSS Ver.3 for RIL compatibility | | Snapdragon 8 Gen 1 | X65 | Wrapper layer: samsung_mss_adapter.c |
: This is the core kernel-mode execution file responsible for routing AT commands and handling cellular network data over USB.
If your PC suddenly stops recognizing your Samsung phone for file transfer, try disabling this driver temporarily. Sometimes MSS Ver. 3 gets too aggressive claiming the device.
The designation stands for Mobile Systems Software Version 3, and its core system file is often listed in your registry as ssudmdm.sys , developed by DEVGURU Co., LTD. , a long-time development partner for Samsung’s mobile connectivity ecosystem. Why Is It Listed in Device Manager?
Tracepoints example:
The driver is deployed as part of the broader Samsung Android USB Driver package. It explicitly handles the interface required for network data:
