Repairing the IMEI on this specific model typically requires specialized hardware or professional software tools because it uses a MediaTek chipset, which handles security differently than standard Qualcomm-based Samsung devices.
Miracle Box (now called "Thunder" Edition) is a professional-grade tool that works on both MTK and Qualcomm C7100 variants. c7100 imei repair
After writing the IMEI, you must patch the certificate to ensure the network stays active and doesn't show "Emergency Calls Only." Repairing the IMEI on this specific model typically