Extract the compressed folder using a tool like 7-Zip, using the official password 12345678 or 1111 if prompted.
Most surviving copies of the CM2 driver come from: coolsand driver cm2
The is a vital software component required to establish a stable connection between Coolsand/RDA chipset-powered mobile devices and the Infinity-Box Chinese Miracle 2 (CM2) dongle . Feature phones and early-generation budget smartphones running on RDA Micro/Coolsand chipsets rely heavily on these proprietary USB drivers for advanced servicing. Without the specific CM2RDA driver package installed, your PC will fail to recognize the device in boot mode, leading to failed flashing, formatting, or repair operations. Extract the compressed folder using a tool like
Click the desired action (e.g., "Read Firmware" or "Format FS"). Connect the phone (holding the boot key) when prompted. Troubleshooting Common Issues Without the specific CM2RDA driver package installed, your
Power off device. Re-enter download mode: typically hold Volume Down + Power or Volume Up + Power while inserting USB. Some Coolsand devices require removing/reinserting the battery.
Right-click the Start button and select Device Manager .