Ok, correct forum now, but the answer is still the same:
You can download the latest BIOS file for DZ68DB, BIOS version 48 (DB0048.BIO), from Softpedia. If you don't trust them, I can post it here.
Now, let's be clear: This is a 6 Series board that was originally intended to support 2nd generation Intel Core processors. Starting with BIOS 40 (DB0040.BIO), support for 3rd generation Intel Core processors was added. The implications of this are:
Hope this explains it,
Hey there sir, would you happen to have any BIOS versions older than this? My version is 14, and my BIOS doesn't allow me to upgrade all the way up to 40. Please? My new GPU doesn't give out output, and this is my last possible effort.
And, as I said in the other thread, do not get your hopes up regarding the rx580 working on this board. You have an old board, a new card, and many years between them.
For example, on the Intel DZ68DB motherboard, you first have to have a second generation processor installed before you can later upgrade the BIOS to the third generation processor.