Spd 6531e Format Tool Repack Link
Power off the phone. Hold the "Boot Key" (usually the center key or '0') and connect it to the PC via USB.
To understand the "Repack," we must first understand the source. The official (also known as Spreadtrum Upgrade Tool) is the standard software used to flash firmware on Spreadtrum devices. It uses .pac files.
This article covers everything you need to know about the tool, including what "Repack" means, why you need it, and how to use it safely.