The NVRAM partition may have a write‑protection flag. Try using Miracle Box or NCK Dongle in “full repair” mode to bypass protection.
Insert the mandatory blank space after AT . The final string must read: .
below the Write IMEI button. You may see a “GPRS failed” error—this is normal; ignore it.
If you have access to professional repair tools like or UMT (Ultimate Multi Tool) MTK , you can repair the IMEI with higher success rates. Launch the tool and select the MT6580 chipset . Select IMEI Repair . Input the original IMEI numbers. Connect the phone in Meta Mode or Factory Mode . Troubleshooting: IMEI Disappears After Reboot
at the top‑left, select “IMEI Download” .
. The tool will write the IMEI numbers to the NVRAM partition.
Windows PC methods require proper MediaTek drivers. Download and install:
