1 of 1 people found this helpful
Provided your DH61WW board has part number AAG23116-204 or later, you should be able to use a 3rd-generation processor with BIOS 41 or later. I recommend, however, that you install the latest available BIOS before installing this processor. This will ensure that you have all BIOS bug fixes, compatibility updates and the latest available microcode for this processor.
As you have found, you cannot directly install the latest BIOS (BIOS 120). There have been too many BIOS releases - and too many architectural changes - in between. You need to first install BIOS 99 and then BIOS 109 and then BIOS 120. Further, I suggest that you install these BIOS releases using the Recovery Method. See the following: Intel Desktop Boards Recovery BIOS Update Instructions.
Hope this helps,