Replacing ACPI Table in BIOS ROM

I extracted with cloverbot the DSDT.aml and my friend managed to edit it succesfully for my needs.
How can I replace the edited file inside the BIOS ROM? I’ve read in this forum that we need MMTOOL to replace the module but I really have no idea wich is the module or how to replace it correctly.

Lost_N_BIOS I think you can help me with this.

Bios :