[Guide] Manual AMI UEFI BIOS Modding

Hi

My MB: Asus M5A99FX PRO R2.0
I want update the AMD AHCI ROM module
This procedure is good?

4. Insertion of an originally not present PCI ROM module

Some mainboards have an on-board AHCI or LAN Controller, but the original BIOS doesn’t contain any suitable OROM module for this device (example: ASMedia 106x AHCI Controller).

Here is the way how to get such missing PCI ROM module inserted into the BIOS:
Check the VendorID and DeviceID of the Controller, whose OROM you want to insert. You can do it from withn the Device Manager by doing a right click onto the related Controller > “Properties” > “Details” > “Property” > “HardwareIDs”.
Open the original or already modified BIOS with the AMI Aptio MMTool.
Hit the “Insert” tab.
Hit the “Browse” button and navigate to the OROM file you want to insert.
Highlight the line with the CSMCORE file.
Check the “For Option ROM only” section.
Enter the VendorID and the DeviceID into the related fields.
Hit the “Insert” button.
Save the modified BIOS file.
Sorry for bad english and thanks