Coolsand RDA USB Driver (32-bit) is a essential system utility that bridges the communication between your Windows PC and mobile devices powered by Coolsand or RDA Microelectronics chipsets. This driver is commonly used for servicing "China phones," keypad handsets, and tablets. Core Features and Capabilities Device Recognition
: Enables the Windows Device Manager to correctly identify the hardware as a "Coolsand UMSS USB Device" or "RDA COM Enumerator" rather than an "Unknown Device". Virtual COM Port Creation
: Automatically assigns a COM port to the connected device, which is required for communication with diagnostic and flashing tools. Service Tool Compatibility coolsand rda usb driver 32 bit
: Fully supports popular mobile repair and forensic software, including: Miracle Box Miracle Eagle Eye Infinity Chinese Miracle-2 (CM2) Cellebrite UFED Micro Systemation XRY for forensic data extraction Operations Support : Facilitates advanced maintenance tasks such as: Flashing official firmware or custom ROMs. Unlocking devices (user locks or network locks). Repairing IMEI or resolving software-related boot loops. Broad OS Compatibility : While optimized for 32-bit (x86)
architectures, the driver package often includes versions for Windows XP, Vista, 7, 8, 8.1, and 10. Technical Specifications Driver Type USB-to-Serial / COM Enumerator Hardware ID USB\VID_0525&PID_A4A7 Package Versions v1.2 and v2.4.0.32 (Common) Installation Format Executable (.exe) or Manual Inf (.zip) manually install the driver via the Windows Device Manager? Coolsand/RDA USB Drivers Free with Full installation Method Coolsand RDA USB Driver (32-bit) is a essential
usbip or VirtualBox with a raw USB device assigned to a 32-bit Windows guest. However, flashing tools often have strict timing, so success is not guaranteed.When downloading "coolsand rda usb driver 32 bit," look for a package containing the following critical files:
| File Name | Purpose |
|-----------|---------|
| RDA_USB_Driver.inf | Setup information file that tells Windows how to install the driver. |
| RDA_USB_Driver.sys | The actual kernel-mode driver binary (32-bit). |
| RDA_USB_Driver.cat | Catalog file (often omitted or self-signed). |
| Install.bat or DPInst.exe | Optional installer helper. |
| usbser.sys | Sometimes included as a substitute if Windows lacks native serial drivers. | Some users have success using usbip or VirtualBox
AT → Expected response: OK.1. "The third-party INF does not contain digital signature information" This is common on Windows 7 and newer. To fix this:
2. Device still not detected