I understand that you are having problems updating the BIOS on your Intel(R) Desktop Board DQ45CB.
In regards to your inquire, I recommend you to enter maintenance mode in BIOS, reset all the passwords, and load the defaults with F9, then save and exit with the F10 key.
After this, go ahead and perform a BIOS recovery to your previous version and then another one to the latest BIOS.
You can find the instructions at the following web site:
I tried it all this, but it has not succeded ..
It fails at the beginning when "flashing firmware image for intel management engine" and it does not go on.
I do not know what to do.. help me.
I'm still the 0051 version of bios of 2008.