--- Mmtool Aptio 4.50.0023 [updated] -

AMI-MMT-4.50.0023-TB Version: 1.0 Classification: Technical Brief (Public/Developer)

, this is arguably the best tool for the job. It is more stable for "Legacy" UEFI modding than its successors. However, always ensure you have a hardware SPI programmer or a robust BIOS recovery method (like IPMI or USB Flashback) ready, as modding firmware always carries a risk of failure. Do you need a step-by-step guide on how to use MMTool for a specific mod, like adding NVMe support --- Mmtool Aptio 4.50.0023

[Guide] How to flash a modded AMI UEFI BIOS - Win-Raid Forum 10 Jul 2014 — AMI-MMT-4