Hello I have followded the guide with no problems until now. I have installed everything that Im suposed to and put all the right files in the right spots of the sd card. I get to step 10 which is to select WAD installation, which I do then there is an additional step that says "select source device" it gives options of wii sd slot, sd gecko slot a and slot b and another one as well. When I select the wii sd slot option and hit A to start install it says
"mounting device...OK!
reading IOS38-64-3867.wad wait...ERROR (ret=-1)"
then it says press any button to restart the wii

ANy ideas what could be the issue?

Thanks in advance for you help!