You can find these tools and required drivers at reputable firmware sites like Android MTK or GSM Forum .
Supports legacy and mid-generation MTK processors ranging from MT65xx series to newer MT67xx chipsets. Finding a Reliable MTK IMEI V30 Link mtk imei v30 link
What or status (e.g., "Invalid IMEI", "Null") are you currently seeing on the device? What operating system is your computer running? You can find these tools and required drivers