I have unzipped the rar files using winRAR, and I have been left with one big ISO file of 6.7GB compared with the previous 2.9GB. I have the Verbatim dual layer 8GB DVDs and was just wondering if someone could walk me through the next steps on how to copy all this onto a fully working sat nav disc for my avic D3...

 

thank you in advance for your speedy responses