: Open your chosen repair tool (e.g., RDA IMEI Write Tool or Miracle Thunder).
Enable the Write IMEI checkbox and enter the 15-digit original IMEI found on the device's box or under the battery. coolsand rda imei repair tool
If your device has multiple SIM slots, go to the "Setup" menu to select the correct SIM count before proceeding. : Open your chosen repair tool (e
A widely used professional tool that supports RDA/Coolsand for flashing, unlocking, and IMEI repair. RDA All-In-One Tool: coolsand rda imei repair tool
This is a lightweight, dedicated utility designed specifically for writing IMEI numbers to RDA-based devices. It is favored for its simplicity and high success rate.