Whats your doubts here, cant you read the log?
Only bios_region can be written.
The Intel FPT tool can write this region, the correct tool for your ME FW version
Ex:
Full backup: fpt -d spi_full.bin
Bios region dump: fpt -bios -bios -d bios_reg_bak.bin
Bios region write: fpt -bios -f bios_reg_mod.bin
