Type in the original 15-digit IMEI number found on the device's box or back sticker.

The Coolsand RDA IMEI Repair Tool is a specialized Windows utility designed for devices powered by the RDA Microelectronics chipset. It is primarily used to restore or "write" a valid International Mobile Equipment Identity (IMEI) number if it becomes lost or corrupted due to software errors or firmware flashing.

Beyond IMEI, some versions allow users to manage screen settings by writing specific LCD names (DSI, RGB, MCU) to ensure hardware compatibility.

Modifying or changing an IMEI to anything other than the device's original manufacturer-assigned number is illegal in many jurisdictions. It is intended strictly for repairing lost original numbers.

It can handle various configurations, including single, dual, or multi-SIM devices with up to four unique identifiers.

Power off your device, then press and hold specific hardware buttons (usually Volume Up + Power) while connecting it to your computer via USB.

Extract the downloaded file and open the executable (often named iewimei_eng.exe ).