Probably someone will cite this fragment from WubiGuide:
How can I use a manually downloaded ISO?
You need to download the appropriate ISO of the appropriate version. Place the ISO in the same folder where you have Wubi-7.04-XYZ.exe. Then run Wubi.
This option could be more visible for a statistical Smith :P That's why it's not the same is the button
Probably someone will cite this fragment from WubiGuide:
How can I use a manually downloaded ISO?
You need to download the appropriate ISO of the appropriate version. Place the ISO in the same folder where you have Wubi-7.04-XYZ.exe. Then run Wubi.
This option could be more visible for a statistical Smith :P That's why it's not the same is the button