Take a look at the post at the top of this pageGassy said:I'm having trouble getting my generated isos to work. I copied the NandGames folder, with contents, to the usb root. Is that what I was supposed to do?.....
Oops - Didn't answer your question! Yes NandGames Folder containing loader.dol to the root of USB or SD and cIOS 249 r17 is fine (even preferred as thats what I use so I know it works OK
If the trouble you are having is that the USB loader sees the ISO's but won't load them, make sure the settings for each ISO forwarder is loaded with Hermes 222 v4 (The newer versions of USB loaders won't load them with cIOS249)