A: No. Cracks are never safe. Any claim of a "safe crack" is a lie to spread malware. Security researchers confirm this repeatedly.
In the context of the mobile repair community, version 3.43 is frequently cited for: MTK Support: Miracle Box Crack BETTER 3.43
If you are looking to set up the software, here is the standard procedure for "Miracle Thunder" editions (like version 3.43 or 3.44) based on typical community guides: Miracle Box Crack BETTER 3.43
Around $100–150 USD for a yearly license (varies by reseller). Miracle Box Crack BETTER 3.43