Ensure you are using a high-quality USB port or a direct SATA connection. SATA-to-USB adapters often lack enough power for flashing.
You must find an "MPTool" (Mass Production Tool) that explicitly lists support for your specific NAND ID. 💾 Where to Download SM2259XT MPTools sm2259xt firmware
This usually means the NAND ID selected doesn't match the physical chips on the board. Double-check your Flash ID. Ensure you are using a high-quality USB port