The is a powerful piece of software that can resurrect a bricked phone with a dead IMEI. When used ethically—to restore the original factory number—it is an invaluable asset for any mobile repair technician specializing in Chinese legacy hardware.
For modern Unisoc phones (SC9832, SC9863, Tiger T310), you must use newer tools like or ResearchDownload .
This tool does NOT work on 4G smartphones, UNISOC SC series, or Qualcomm devices. Attempting to use it on unsupported hardware will fail or brick the device. coolsand rda imei repair tool
: Fines up to $500,000 and/or 10-15 years imprisonment in severe cases.
Disclaimer: Modifying or changing an IMEI number to mask a stolen device is illegal in many jurisdictions. This guide is strictly intended for restoring a device's original, legally assigned IMEI that was lost due to software corruption. Step 1: Install the USB Drivers The is a powerful piece of software that
Coolsand and RDA chips utilize various boot types (e.g., Boot_7_8_9, Auto Detect).
Several multi-functional service utilities support the Coolsand and RDA architectures: 1. Miracle Box / Miracle Thunder This tool does NOT work on 4G smartphones,
Disable Windows Driver Signature Enforcement if you are using Windows 10 or 11, then install the Coolsand/RDA USB drivers. Restart your PC to ensure the changes take effect. Step 2: Launch the Repair Software
A invalid or blank IMEI on a Coolsand or RDA-powered feature phone completely cuts off cellular network access, turning a mobile device into an offline brick. Fixing this issue requires specialized software tools designed to communicate directly with Coolsand and RDA microcontrollers.
Before diving into the repair tool, it is essential to understand the manufacturer. (acquired by Spreadtrum, now Unisoc) was a fabless semiconductor company that designed baseband processors for low-cost mobile phones. Their chipsets were widely used in:
Select the correct (if using a specific serial interface) or set it to "Auto".