Some scatter files contain incorrect memory layout addresses. If the ram_headers or memory regions are misconfigured for your specific device, the flashing process triggers an exception when trying to access non-existent or protected memory zones.
The STATUS_EXT_RAM_EXCEPTION (Error 0xC0050005 ) in SP Flash Tool typically occurs because the tool's cannot properly initialize the device's external RAM (DRAM) . This is almost always caused by a firmware mismatch or a specialized hardware security check. Primary Causes