Click , browse to your unzipped Coolsand/RDA driver folder, choose the .inf file, and click Next to force the installation. Troubleshooting Common Connection Issues
Bad USB cable, dirty charging port, or USB 3.0 incompatibility.
dongle to service mobile devices powered by RDA/Coolsand chipsets. These drivers enable a stable communication bridge between a Windows PC and the device, allowing the Infinity-Box software to perform advanced maintenance tasks. Core Functionality The driver works in tandem with the CM2RDA module
In the world of legacy mobile phone hardware and embedded systems, few names spark as much niche technical interest as . While not a household name like Qualcomm or MediaTek, Coolsand (a brand under the VIA Telecom umbrella) produced semiconductor solutions primarily for feature phones, low-cost smartphones, and specialized industrial devices. One of their most referenced—and often misunderstood—components is the Coolsand Driver CM2 .
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: Ensures the PC identifies the phone in "Boot Mode," which is often triggered by holding a specific key (like the "0" key) while connecting the USB cable. Installation and Compatibility
Extract the ZIP or RAR archive to your desktop using WinRAR or 7-Zip. Step 3: Manual Installation via Device Manager
Browse to the folder where you extracted the Coolsand drivers and select it.
Open on your Windows computer (right-click Start > Device Manager). coolsand driver cm2
Power off the phone and connect it to your PC via USB while holding the Boot Key (typically the 0 , Center , or Call button).
The community has also created of the Coolsand Driver CM2 that work on Windows 10/11 without disabling signature enforcement. These are hard to find but circulate in private GSM forums. A signed version is the ultimate solution for professional technicians.
Complete Guide to Coolsand Driver CM2: Installation, Troubleshooting, and Flashing
: The device might appear as "RDA USB Driver for gallite 8809" after proper installation, which is a good indicator that the driver setup was successful. Click , browse to your unzipped Coolsand/RDA driver
If you are a technician looking for the driver file:
If your CM2 software still throws a "Device Not Found" or "Timeout" error, run through these diagnostic steps:
When the CM2 dongle and Coolsand drivers are correctly configured, technicians can perform several critical deep-level hardware tasks: Security Bypass:
Installing the correct driver is a fundamental step. While the InfinityBox_update_CM2RDA_Drivers_v1.00.rar package is a common driver pack shared in GSM forums, a manual installation using the RDA_USB_Driver_for_gallite_880x.inf file is often required for reliable device recognition. These drivers enable a stable communication bridge between