Md5 %28mcpx 1.0.bin%29 = D49c52a4102f6df7bcf8d0617ac475ed !!install!! | Windows |

The Boot ROM must be exactly 512 bytes . If your file is significantly larger (e.g., 256KB or 1MB), you have likely mistaken a BIOS/Flash ROM for the Boot ROM.

md5sum "mcpx 1.0.bin"