Before diving into the repair tool, it is essential to understand the hardware. was a Chinese fabless semiconductor company that developed low-power, cost-effective baseband processors. In 2014, RDA Microelectronics (RDA) acquired Coolsand. Today, the combined technology is referred to as Coolsand RDA or simply the RDA chipset family .
Check hardware versions and current software status.
These chipsets run a proprietary baseband firmware and store critical device data—including the IMEI—in a dedicated partition (typically the or a .nv file ). coolsand rda imei repair tool
The CoolSand RDA IMEI Repair Tool comes with a range of features that make it an essential tool for IMEI repair. Some of its key features include:
: It allows users to write or rewrite the 15-digit unique identifier (IMEI) to the device's hardware memory. Before diving into the repair tool, it is
Download and install the RDA USB Driver to ensure your PC recognizes the chipset.
: Technicians often use broader software like Miracle Thunder Box or CM2 (Chinese Miracle 2) to manage Coolsand/RDA devices, including formatting and security code removal. Critical Considerations Today, the combined technology is referred to as
Open the executable file (often named iewimei_eng.exe ) from the extracted tool folder.