SP Flash Tool is a software tool or utility for advanced users to manually flash firmware, recovery etc on Android smartphones based on MediaTek chipsets #TechProlonged
With a software called SN Write Tool, you can write IMEI numbers, WiFi mac address, Bluetooth mac address, bar codes and such things to the MediaTek smartphone. This will fix issues like Invalid IMEI and WiFi NVRAM Warning.
If you can not make or receive calls on your Android phone and see “Invalid IMEI” notification on the status bar, you can fix this by restoring NVRAM.
