Gigabyte have finally released an updated BIOS for the GA-EP45-DS3L F11bhttp://www.gigabyte....?ProductID=2844
EDIT: Okay - it works great WARNING! - as with any BIOS update - Do this at your own risk.
1 - Download F11b BIOS
2 - In Windows, extract BIOS file from .EXE (I have now added the extracted BIOS file here
3 - Rebuild your DSDT using the new EP45DS3L.11b
BIOS file adding all your patches then add it to /Extra.
4 - In Windows, format a USB memory stick as FAT (not FAT32)
5 - Copy the EP45DS3L.11b
BIOS file to the USB
6 - With USB stick in hackintosh, reboot and press DEL to enter BIOS
7 - Press F8 to enter Q-Flash Utility.
8 - Select Floppy (I think I did that), and it will read the USB stick and display the BIOS file found.
9 - Select to install it, and it will give you a checksum value of 3A00. Select OK and update your BIOS.
10 - Reboot by pressing one of the options shown (Can't remember which), and press DEL to enter the BIOS.
11 - Select Load Optimized Defaults, then set all your previous BIOS settings. AHCI, HPET 64-bit etc..
12 - Save and reboot. And you will now see AHCI v1.20E and have a faster boot process.
Snow Leopard booted up first time but I didn't have network. DCHP was self-assigned ... 169.?.?.?
I have had this before so I switched off the computer, and flicked the power switch to off and left it for a minute to reset the CMOS. Flicked the power switch back on, and press the power button on the front. All booted perfectly and network is now back to normal. Everything works as it should. Bingo!
For more info you can read mitch_de's thread
about Gigabyte BIOS updates.