Lenovo H405 tilapia motherboard ami bios unlock request

There are no bios updates from Lenovo for this board.

Need AHCI but I know there are other features that should also be enabled. Lenovo has an online virtual tool for IT pros to navigate the bios for this board and it looks different from what I have. I also found a screenshot of another version (same mobo and bios chip version as mine)on some chinese site that shows sata options as raid, native, ahci, and legacy while mine only shows raid and native. Lenovo tech support assures me that there are no bios updates hence the board won't support ahci which is crap because the specs for the amd chipsets clearly show ahci support. Based on what I've found there are at least 3 bios versions for my board, but I can't find them anywhere. Please point me in the right direction.

as read from cpuZ:
Lenovo H405 desktop
Motherboard LENOVO Tilapia CRB (M3A760M v:1.01 printed on board)
Northbridge AMD 780G
Southbridge AMD SB700
BIOS LENOVO
Version D2KT31AUS

as displayed on boot after post:
American Megatrends Aptio 4.6.3
version 1.24.115

printed on bios chip:
686
AMIBIOS
C 1999
YY53
5136

I dumped the bios(attached) using AFUWINGUI.EXE

If this needs to be moved to ahci forum please feel free as I wasn't sure where to put it.

Thanks in advance

  afuwin.rom (Size: 2 MB / Downloads: 0)