If your system will start using the Devils Canyon then you can just upgrade the BIOS to get the full support for the CPU.
If it won't start up then using a cheaper CPU to update the BIOS first is often the quickest way to go.
Oh, by the way, if the PC won't start when using the Devils Canyon CPU don't worry, you will not do any harm to the motherboard or the CPU but you will probably get a lot of beeps from the motherboard speaker if you have one attached!