In Device Manager, under "Imaging Devices" or "Cameras," the device appears with a yellow exclamation mark (!), listed as "Unknown Device," or named wrongly.
Run deep diagnostics on the phone’s RAM, storage, and CPU health.
: Insert your CM2 Dongle into a USB port. Windows should automatically recognize the hardware if the drivers were installed correctly. Connecting a Device
Step 1: Disable Driver Signature Enforcement (Crucial for Windows 10/11)
This usually indicates a broken driver or an incorrect color format being used [3]. Frequently Asked Questions
Modern Windows versions may block "unsigned" drivers. Restart your PC into "Advanced Startup" and select "Disable Driver Signature Enforcement" to ensure a smooth install. Manual Installation: Device Manager on your PC. Connect your phone (typically by holding the as you plug it in). Look for "Unknown Device" or "Coolsand" under Other Devices Right-click and select Update Driver , then browse manually to your downloaded driver folder. Pro-Tip: The "Boot Key" Secret
Infinity Chinese Miracle 2 (CM2) dongle and active setup module.
If Windows warns about an unsigned driver, select Install this driver software anyway . 3. Verification in CM2
Safely format user data or bypass forgotten keypad security codes without corrupting the phone’s operating system.
Most CM2 drivers can be forced to work with Windows 11 using the Device Manager update method, though they are technically meant for older USB standards.
Connect your Coolsand phone to the computer in boot mode (usually requires holding 0 , * , or # while connecting the USB cable).
Backing up or restoring the firmware from a Coolsand chip.
The software will detect the Coolsand COM port, initiate the bootloader handshake, and execute the selected service task. 5. Troubleshooting Common Errors
