Thanks, I'll try that and hopefully that's the problem.you can try d2x cIOS installer 2.2 instead of 3.1
even if I never encounter errors with latest 3.1, I hears it has some issues (and that's why v2.2 was used as base for vWii d2x installer version).
you have the chance that googlecode is still online, in archived mode :
https://code.google.com/archive/p/d2x-cios-installer/downloads
you can find the installer v2.2 there.
replace the dol and it should be enough.
don't replace the ciosmap.xml or you'll have only d2x v6 available.
As for knowing if my Wii is converted, would you know anything about that?