To actually answer the question of 'My friend just got a new G5 that came with OS X 10.4.4. Would I be able to use her software discs and install it on my old G4 dual 500/1G ram?' - no.
Instead of applying a dictatorial administrative action, a clear answer or answers should have been provided.
01. Yes, your proposal of installing a version of MacOS X, you did not purchase, receive as a gift, etc., is not legal.
02. Most likely, the installation disc(s) provided with the G5, is for that model Mac, and will not install on your G4.
03. You do not have to do 'any' firmware updates to install and use MacOS X 10.0.0 through 10.4.5 on a dual 500 MHz G4 PowerMac.
04. Before posting to any assistance web site, it is best to read and comprehend the guidelines and expectations of such web site. However, even doing such, and abiding by such, may not prevent some administrator from over re-acting, etc. This statement is not specific only to your post being 'closed'.
Instead of applying a dictatorial administrative action, a clear answer or answers should have been provided.
01. Yes, your proposal of installing a version of MacOS X, you did not purchase, receive as a gift, etc., is not legal.
02. Most likely, the installation disc(s) provided with the G5, is for that model Mac, and will not install on your G4.
03. You do not have to do 'any' firmware updates to install and use MacOS X 10.0.0 through 10.4.5 on a dual 500 MHz G4 PowerMac.
04. Before posting to any assistance web site, it is best to read and comprehend the guidelines and expectations of such web site. However, even doing such, and abiding by such, may not prevent some administrator from over re-acting, etc. This statement is not specific only to your post being 'closed'.