So I'm buying a used Mac Pro 1.1 next month. It has an original dual Intel Xenon dual-core CPUs, and I'm aiming to upgrade it to Intel Xenon X5355s and I already bought them.
I've read a lot about it online and some people say that they needed to upgrade the firmware. Youtube upgrade demonstrations were helpful though.
My question is - how can I tell if Mac Pro needs a firmware upgrade, and if it does, how is it upgraded?
Also, is firmware same thing as BIOS in PCs?
Sorry if this has been asked before, but most topics address these terms as something common, but I've never used a Mac before. An in-depth explanation would be great.